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Yemen: Civil War and Regional Intervention

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Yemen: Civil War and Regional Intervention

March 21December 6, 2017 (R43960)
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Summary

This report provides material on the ongoing crisis in Yemen and the U.S. policy response.

In March 2015, Saudi Arabia and members of a coalition it established (hereinafter referred to as the Saudi-led coalition) launched a military operation aimed at restoring the rule of Yemen's internationally recognized President Abdu Rabbu Mansour Hadi. Prior to the start of hostilities, Hadi's government had been gradually supplanted by an alliance comprised of the Iran-supported Houthi movement and loyalists of the previous President, Ali Abdullah Saleh (hereinafter referred to as Houthi-Saleh forces).

Despite multiple attempts by U.N. Special Envoy for Yemen Ismail Ould Cheikh Ahmed to broker a peace agreement, the Saudi-led coalition and Houthi-Saleh forces continue to disagree on the fundamentals of a political settlement. After two years of war, the Saudi-led coalition would most likely resume negotiations from a position of strength. The coalition's current offensive along the Red Sea coast seeks to cut maritime access off to Houthi-Saleh forces in the hopes that their isolation will force them back to the table.

In January 2017, the United Nations estimated that the civilian death toll in the nearly two-year conflict had reached 10,000. In March 2017, the World Food Program reported that while Yemen is not yet in a full-blown famine, 60% of Yemenis, or 17 million people, are in "crisis" or "emergency" food situations.

During the last year of the Obama Administration, U.S. policy toward the conflict in Yemen shifted toward a more nuanced approach after having initially emphasized strong support for the Saudi-led coalition's campaign and the restoration of Hadi's presidency. The Obama Administration called upon the parties to negotiate a political settlement directly, emphasizing that "we're on the side squarely of the Yemeni people," while also stressing that Saudi Arabia itself is under daily attack and has a right to defend itself. The Administration sought to work multilaterally through the United Nations to pursue a cease-fire that would—in the expressed hopes of the Administration—ultimately jumpstart negotiations toward a comprehensive political settlement to the conflict.

As those peace efforts did not succeed, some observers expect the Trump Administration to take a different approach toward the conflict by more openly trying to deter Iranian support for Houthi-Saleh forces and refraining from openly criticizing the Saudi-led coalition's conduct of the war.

In 2017, President Trump reportedly authorized an increase in U.S. airstrikes against AQAP. In early March 2017, the United States reportedly conducted over 40 airstrikes against AQAP inside Yemen, which U.S. officials said were coordinated with the Hadi government. A recent counterterrorism raid in Yemen generated debate following the death of Navy SEAL William "Ryan" Owens. The raid also claimed the lives of between four and twelve Yemeni civilians, including several children, one of whom was a U.S. citizen. The raid was the Trump Administration's first acknowledged counterterror operation.


Yemen: Civil War and Regional Intervention

Conflict Overview

Saudi Arabia established a coalition (hereinafter referred to as the Saudi-led coalition) in March, 2015, and launched a military operation aimed at restoring the rule of Yemen's internationally- recognized President Abdu Rabbu Mansour Hadi.1 Hadi's government was being gradually supplanted by an alliance comprisedLatest Developments

  • Former President Ali Abdullah Saleh Killed by Houthis
  • Houthi Missile Attack and Port Closure
  • Yemen at the United Nations
  • Yemen's Humanitarian Crisis and U.S. Response
  • Hodeida Port and Humanitarian Access
  • Summary

    This report provides information on the ongoing crisis in Yemen. Since March 2015, Saudi Arabia and members of a coalition it established have been engaged in military operations against an alliance composed of the Houthi movement and loyalists of the previous President, Ali Abdullah Saleh. In early December 2017, the Houthi-Saleh alliance unraveled, culminating in the killing of former president Saleh on December 4, 2017. The killing of Saleh and the end of his forces' alliance with the Houthis may have changed the dynamic of the war. In the coming months, it is possible that on-the-ground fighting may escalate, as the Saudi-led coalition and remnants of Saleh's allies join forces to isolate the Houthis.

    Health facilities in Yemen reported 8,757 conflict-related deaths and over 50,000 injuries from the start of hostilities in March 2015 through October 2017. However, due to the high number of nonfunctional health facilities in Yemen as a result of the war, the United Nations estimates that the death toll in Yemen is significantly underreported. The actual number of casualties is likely much higher, with more than 2,200 Yemeni deaths associated with a cholera outbreak alone in 2017.

    On November 4, 2017, the Houthis fired a ballistic missile into Saudi Arabia. In response, the Saudi-led coalition accused Iran of supplying more sophisticated missile technology to the Houthis, and said in a statement that the attack "could rise to be considered as an act of war" by Iran. The coalition then announced that it was temporarily closing all Yemeni ports, including the main commercial port of Hodeida, on November 6, 2017. Many humanitarian agencies decried the closing of all ports of entry into Yemen, asserting that the Saudi-led coalition was violating international law by using starvation as a weapon. The total closure of all Yemeni ports lasted until November 24, 2017, when the Saudi-led coalition announced that it would begin allowing humanitarian aid to resume entering Hodeida port. The Saudi-led coalition did lift its blockade on select humanitarian deliveries as of early December 2017, but it is unclear whether the coalition is permitting commercial goods to be imported.

    The Trump Administration welcomed the coalition's actions while further stating, "We look forward to additional steps that will facilitate the unfettered flow of humanitarian and commercial goods from all ports of entry to the points of need.... All sides must support a political process with facilitating humanitarian relief as the top priority. We remain committed to supporting Saudi Arabia and all our Gulf partners against the Iranian Islamic Revolutionary Guard Corps' aggression and blatant violations of international law."

    Since March 2015, the United States has been the largest contributor of humanitarian aid to Yemen. In FY2017, the United States provided over $635 million in humanitarian aid from multilateral accounts in response to Yemen's humanitarian crisis.

    Yemen: Civil War and Regional Intervention

    Conflict Overview

    In March 2015, Saudi Arabia and members of a coalition it established (hereinafter referred to as the Saudi-led coalition or the coalition) launched a military operation aimed at restoring the rule of Yemen's internationally recognized president, Abdu Rabbu Mansour Hadi.1 Prior to the start of hostilities, Hadi's government had been gradually supplanted by an alliance composed of the Iran-supported of the Iran-supported2 Houthi movement32 and loyalists of the previous President, Ali Abdullah Saleh (hereinafter referred to as Houthi-Saleh forces). In early December 2017, the Houthi-Saleh alliance unraveled, culminating in the killing of former president Saleh on December 4, 2017.

    Despite multiple attempts by the United Nations to broker a peace agreement, all sides have remained deadlocked, as battle lines had become static and the conflict itself stalemated. 3 Saleh's death and the fraying of his forces' alliance with the Houthis may have changed the dynamic of the war. In the coming months, it is possible that on-the-ground fighting may escalate, as the Saudi-led coalition and remnants of Saleh's allies join forces to isolate the Houthis.

    As of late November 2017, the United Nations had not revised a January 2017 death toll estimate of 10,000 people killed since the start of hostilities (March 2015). The actual number of casualties is likely much higher, with more than 2,200 Yemeni deaths from a 2017 cholera outbreak alone.

    On November 6, 2017, after a Houthi missile strike on Saudi soil near King Khalid international airport in Riyadh, Saudi forces imposed a full closure of air and sea access to Yemen. The United Nations warned that total restrictions on aid deliveries could produce famine, especially in northern Yemen. The total blockade was partially lifted on November 24, and the White House responded, stating, "We look forward to additional steps that will facilitate the unfettered flow of humanitarian and commercial goods from all ports of entry to the points of need. The magnitude of suffering in Yemen requires all parties to this conflict to focus on assistance to those in need. All sides must support a political process with facilitating humanitarian relief as the top priority."4

    Figure 1. Map of Yemen

    Source: European Council on Foreign Relations, Mapping the Yemen Conflict.

    and loyalists of the previous President, Ali Abdullah Saleh (hereinafter referred to as Houthi-Saleh forces).

    As Houthi forces advanced on the southern city of Aden, the Saudi-led coalition launched air strikes in response to a specific request from President Hadi "to provide instant support by all necessary means, including military intervention to protect Yemen and its people from continuous Houthi aggression and deter the expected attack to occur at any hour on the city of Aden and the rest of the southern regions, and to help Yemen in the face of Al Qaeda and ISIL."4

    With Houthi-Saleh forces poised to seize control of Yemen's government, Saudi Arabia may have acceded to Hadi's request and launched military operations out of fear that Yemen, under Houthi-Saleh rule, would fall under Iranian influence.5 Some reports suggest that the Saudis also viewed this military campaign as an opportunity to burnish the credentials of the young and newly appointed Defense Minister, Prince Mohammed bin Salman.6

    On April 14, 2015, the United Nations Security Council adopted Resolution 2216, which imposed sanctions on individuals undermining the stability of Yemen, and authorized an arms embargo against the Houthi-Saleh forces. It also demanded that the Houthis withdraw from all areas seized during the current conflict, relinquish arms seized from military and security institutions, cease all actions falling exclusively within the authority of the legitimate Government of Yemen, and fully implement previous Council resolutions. Russia abstained on resolution 2216; it had proposed an alternative resolution calling for an arms embargo on all sides and an immediate cease-fire without the precondition of a Houthi-Saleh withdrawal from areas it seized.

    After two years of war, battle lines in Yemen have hardened. The Saudi-led coalition has retaken the port city of Aden and the lowland areas of southern Yemen (traditionally Sunni). Houthi-Saleh forces remain ensconced in the capital Sana'a and the mountainous highlands of northern Yemen (traditionally Zaydi7). The lines of control now somewhat resemble the division of Yemen into two separate countries from 1918 to 1990. Since the start of 2017, Saudi-led coalition-backed Yemeni forces have been fighting to retake coastal areas in far southwestern Yemen near the Bab al Mandab strait, capturing the city of Mokha in February.

    Prelude to the War

    Central governance in Yemen, embodied by the decades-long rule of former President Ali Abdullah Saleh, began to unravel in 2011, when political unrest broke out throughout the Arab world. Popular youth protests in Yemen were gradually supplanted by political elites jockeying to replace then-President Saleh. Ultimately, infighting among various centers of Yemeni political power broke out in the capital, and government authority throughout the country eroded. Soon, militias associated with Al Qaeda in the Arabian Peninsula seized territory in one southern province. Concerned that the political unrest and resulting security vacuum were strengthening terrorist elements, the United States, Saudi Arabia, and other members of the international community attempted to broker a political compromise. A transition plan was brokered, and in 2012 former Vice President Abdu Rabbu Mansour Hadi became president.

    With the support of the United States, Saudi Arabia, and the United Nations Security Council, President Hadi attempted to reform Yemen's political system. Throughout 2013, key players convened a National Dialogue Conference aimed at reaching broad national consensus on a new political order. However, in January 2014 it ended without agreement.

    One anti-government group in particular, the northern Yemeni Houthi movement, sought to use military force to reshape the political order. Within weeks of the National Dialogue Conference concluding, itthe Houthis launched a military offensive against various tribal allies of President Hadi. The HouthiHouthis were joined by the forces still loyal to former President Saleh, creating an alliance of convenience that was a formidable opponent to President Hadi and his allies.

    In 2014, Houthi militants took over the capital and violated several power-sharing arrangements. In 2015, Houthi militants placed President Hadi under house arrest. Although he was able to escape to Aden in southern Yemen, his position became untenable, as Houthi forces advanced from the capital all the way to Aden. In March 2015, after President Hadi, who had fled to Saudi Arabia, appealed for international intervention, Saudi Arabia and a hastily assembled international coalition launched a military offensive aimed at restoring Hadi's rule and evicting Houthi fighters from the capital and other major cities.

    In January 2017, the United Nations estimated that the civilian death toll in the nearly two-year conflict had reached 10,000.8

    Figure 1. Yemen: Current Lines of Control

    Source: Mapping the Yemen Conflict, European Council on Foreign Relations

    As of March 2017, fighting continues throughout the country, most notably in and around the following.

    • Taiz. Yemen's third largest city, Taiz (pre-war population of 300,000), continues to witness fierce fighting. Forces aligned with the coalition control most of Taiz city, but its environs are largely sealed off by Houthi-Saleh forces that surround the city on three sides. Houthi-Saleh forces only periodically permit humanitarian aid to reach city residents, and 37 of the city's 40 hospitals and medical institutions are closed. The city has been under siege since April 2015, and the humanitarian situation is dire, with reports of skyrocketing food prices and starvation.9
    • Saudi-Yemeni Border. In the far north along the Yemeni-Saudi border, Houthi-Saleh forces continue to target the kingdom. In the Saudi provinces of Najran and Jizan, Houthi-Saleh forces have launched offensives into Saudi territory and Scud and other ballistic missiles/rockets into Saudi territory and at coalition forces inside Yemen. Saudi Arabia and the United Arab Emirates each have multiple U.S.-supplied Patriot missile batteries protecting their respective forces. Thousands of Saudi residents along the border with Yemen have been evacuated from populated areas in order to create a military buffer zone.10
    • West of Marib Province toward the capital. Bordering the capital province of Sana'a to the east, Marib governorate and city are strategically important areas that the Saudi-led coalition seeks to control. Marib province is where the country's main refinery is located, along with one of its two main oil pipelines. Houthi-Saleh forces have been attacking the Marib tribes and coalition forces and are now pushing west toward Sana'a.
    • Sana'a (Yemen's capital). From April 2016 to August 2016, the Saudi-led coalition had largely spared Sana'a from aerial strikes as part of its commitment to the cessation of hostilities. When U.N.-mediated peace talks collapsed in August 2016, the Saudi-led coalition resumed bombing.

    Prospects for a Political Solution

    Despite multiple attempts by U.N. Special Envoy for Yemen Ismail Ould Cheikh Ahmed to broker a peace agreement, the Saudi-led coalition and Houthi-Saleh forces continue to disagree on the fundamentals of a political settlement. In late October 2016, the U.N. Envoy presented another peace plan to both sides. According to various reports, the Envoy's road map to peace included the following:11

    • gradually transferring presidential power to either a new prime minister and/or vice president (the presidency would then become mostly a ceremonial position),
    • the formation of a national unity government,
    • gradually removing Houthi-Saleh forces from cities seized between 2014 and 2015,
    • the formation of an international observation mission to verify Houthi withdrawal, and
    • gradually transitioning toward presidential and parliamentary elections.

    President Hadi rejected this plan. He claims that his abdication would legitimize Houthi-Saleh forces' capture of the capital, which Hadi calls a coup. Hadi also calls for Houthi-Saleh forces to relinquish their heavy weaponry (including ballistic missiles and launchers). Saudi Arabia demands that the Houthi-Saleh forces relinquish these weapons to a third party, and insists on a guarantee that a new unity government would prohibit the deployment of weapons that can threaten international waterways or Saudi territory. For their part, Houthi-Saleh forces seek Hadi's resignation and require an immediate formation of a unity government in which they play a significant role. They also seek to integrate their militiamen into the nation's armed forces.

    Reports indicate that U.N. Special Envoy Ahmed may have recently altered the road map for peace to allow for President Hadi to remain in office until elections, rather than transferring power to an interim prime minister or vice president.12 Houthi-Saleh forces reject such a change and have demanded that the United Nations appoint a new special envoy.

    Table 1. Yemen Profiles

     

    President Abdu Rabbu Mansour Hadi

    President Abdu Rabbu Mansour Hadi – Originally a major general in the South Yemeni military, Hadi fled to North Yemen in 1986, where he became a close ally of President Ali Abdullah Saleh. Hadi was eventually appointed Defense Minister and then Vice President of a unified Yemen. He served as Saleh's vice president for 18 years, and became acting president following Saleh's downfall in an Arab Spring-inspired uprising. The 69-year old President is supported by Saudi Arabia but rules mostly outside the country due to the security situation.

     

    Former President Ali Abdullah Saleh

    Former President Ali Abdullah Saleh governed the unified Republic of Yemen from 1990 to 2012; prior to this, he had headed the former state of North Yemen from 1978 to 1990. Under Saleh's rule, political power gradually coalesced around his immediate family, whose members filled key posts in various security services. Corruption was rampant, and the country remained the poorest in the Arab world and one of the most destitute nations on earth. After stepping down from the presidency in 2012, Saleh remained ensconced as president of the General People's Congress party, the former ruling party. Since 2014, Saleh has been widely seen as aiding the Houthis in their struggle against Hadi's government, and in 2015 he publicly announced his support for the Houthis against the Saudi-led coalition. The alliance between the Houthis and Saleh, against whom they fought a bitter war for nearly a decade, is usually seen as one of convenience and thus fundamentally unstable.

     

    Abdul Malik al Houthi

    Abdul Malik became leader of the Houthi movement after the death of his brother, parliamentarian and Zaydi sheikh Hussein al Houthi, in 2004, shortly after Hussein began assembling forces against Saleh's government in what eventually became the Houthi insurgency. That insurgency culminated in the 2014 Houthi takeover of Sana'a, and Abdul Malik and his brother Yahia are generally recognized as leaders of the Houthi movement (officially known as Ansar Allah). Abdul Malik al Houthi comes from a prominent Zaydi family that seeks to restore the Zaydi Imamate, which ended in 1962.

     

    Vice President Ali Mohsen Al Ahmar

    Mohsen has been on nearly every side of Yemeni politics during his five decades of military service. He was an early ally of President Saleh, and played a central role in combating the nascent Houthi insurgency that began in 2004. In the 2011 uprising against Saleh's rule, Mohsen defected and publicly declared his support for protestors, but in 2012 President Hadi removed him from his military command as part of an effort to restructure the military. Mohsen fled the country after the Houthi takeover, returning in late 2015 to lead military operations against the Houthis as part of the Saudi-led coalition. As one of the founding members of the Islah party, Mohsen reportedly has strong Salafist leanings and close relations with Saudi Arabia, and is a member of one of the nation's largest tribal confederations, the Hashid.

     

    U.N. Special Envoy for Yemen Ismail Ould Cheikh Ahmed

    Mauritanian diplomat Ismail Ould Cheikh Ahmed was appointed Special Envoy for Yemen in 2015 after the resignation of Jamal Benomar. Ould Cheikh Ahmed is a longtime UN official with previous experience in Yemen and Syria.

    Table 1. Yemen Profiles

    Will the Conflict End in 2017?

    As the war in Yemen enters its third year, many observers are concerned that the prospects for a political settlement remain elusive. At the heart of the conflict is the question of how much political power Houthi-Saleh forces will ultimately wield in Yemen. President Hadi has been willing to share power with the Houthis, but only within the context of a national unity government in which their role in not preeminent. President Hadi and his Saudi backers may distrust the Houthis, who, they say, have already violated previous United Nations-brokered power-sharing agreements, such as the 2014 peace and national partnership agreement (it granted the Houthis greater representation in a new government). In July 2016, Houthi-Saleh forces formed the High Political Council to govern areas under their control, and their opponents may suspect that Houthi-Saleh forces seek to govern all of north Yemen, from where they can militarily threaten Saudi Arabia using long-range missiles and rockets supplied by Iran.13 From the Houthi-Saleh perspective, while this coalition may be a marriage of convenience, both parties seek to maximize their influence, particularly in the north. The Houthis have used military force to change the terms for negotiations with President Hadi, by repeatedly rejecting attempts to limit its influence to its home governorate of Sa'dah.14 Former President Ali Abdullah Saleh, the Houthis main partner, seeks to restore his influence (and his family's) over the central government after losing the presidency in a U.S.-backed, Gulf Cooperation Council (GCC)-brokered transition plan which led to the February 2012 election of President Hadi. Many analysts argue that if Houthi-Saleh forces were left to govern north Yemen, their alliance would eventually crumble, as both sides would vie for political supremacy.

    After two years of war, the Saudi-led coalition would to negotiate with their opponents from a position of strength. The coalition's current offensive along the Red Sea coast seeks to cut maritime access off to Houthi-Saleh forces in the hopes that their isolation will force them back to the table. President Hadi also has moved the Central Bank to Aden, and payments to thousands of civil servants in Houthi-Saleh controlled territory have been cut off. If the coalition's latest strategy succeeds, then perhaps later in 2017, U.N.-brokered peace negotiations could resume. However, if Houthi-Saleh forces militarily endure, then the Saudi-led coalition may have limited options. Militarily, the Saudi-led coalition has primarily relied on air power and local tribal militias as its ground force. It has not committed significant numbers of ground troops to fight Houthi-Saleh forces in the Yemeni highlands, a strategy that most likely would incur heavy casualties and risk losing public support for the war effort. The status quo of a divided Yemen leaves the Saudi-led coalition responsible for propping up a weak internationally-recognized Yemeni government based out of Aden. If the status quo continues indefinitely, many analysts believe that both Yemeni governments would be in a constant state of conflict with each other, while transnational terrorist groups like AQAP would take advantage of a more permissive atmosphere given the absence of a unified Yemeni government and military. According to former U.S. Ambassador to Yemen Gerald Feierstein, "With little prospect of an immediate resolution of the conflict and in the face of increasing complexity, as tribal, sectarian and counterterrorism issues are introduced, Yemen's ultimate survival as a unified country hangs in the balance."15

    The Battle for Hodeida

    With U.N.-sponsored peace talks stalled in early 2017, the Saudi-led coalition altered its military strategy in an attempt to politically pressure and militarily isolate Houthi-Saleh forces. On January 9, 2017, the coalition launched a new offensive (dubbed Golden Spear/Arrow) along Yemen's 280-mile western coastal plain ultimately aimed at taking the strategic port city of Hodeida, a maneuver which would essentially sever Northern Yemen's access to the Red Sea. According to Yemen's Foreign Minister Abdel Malek al-Mekhlafi, the latest offensive "is important to reignite the political process....The Houthis will not accept dialogue [unless they are forced into talks by] a change on the ground."16 The Saudi-led coalition scored some early successes in this front at considerable humanitarian cost. It seized the smaller port town of Mokha in early February. With the Saudi-led coalition's naval forces positioned along the coast, its ground forces controlling the highway into Hodeida city, and its air forces striking targets inside the port city, it would appear that the coalition is preparing for a final assault on Hodeida. 17

    Many international relief agencies and humanitarian organizations are concerned that if the port of Hodeida is irreparably damaged (it has been previously targeted as well), it would exacerbate an already dire shortage of food and medical supplies in war-torn areas of northern Yemen, which is largely controlled by Houthi-Saleh forces. Jamie McGoldrick, the United Nations Resident Humanitarian Coordinator and Representative for Yemen, said "I am deeply concerned with the escalation of conflict and militarization of Yemen's western coast. It is coming at a great cost to civilians...Given that the country is 80%-90% dependent on imported food staples, I am compelled to raise the alarm...If left unabated, these factors combined could accelerate the onset of famine."18 One recent report noted that international aid agencies, such as the Red Cross, have already stopped using Hodeida's port, while in Mokha, Houthi-Saleh forces may have laid mines in the harbor before it was seized by the Saudi-led coalition.19

    March 2017 Strike on Migrant Boat off the Coast of Hodeida

    In late March 2017, a military helicopter fired at a boat of Somali migrants 30 miles of the coast of Hodeida killing 42 people. The refugees were leaving Yemen for Sudan and had departed from Hodeida port. The United Nations has called for an inquiry into the attack. The Saudi-led coalition has denied responsibility and has stated that Hodeida port should be placed under United Nations supervision to "facilitate the flow of humanitarian supplies to the Yemeni people, while at the same time ending the use of the port for weapons smuggling and people trafficking." Somalia's foreign minister, Abdisalam Omer, has accused the Saudi-led coalition of carrying out the strike.

    In 2016, the United States took steps to repair the port of Hodeida by providing the World Food Program with funds to purchase four replacement cranes which had been damaged in previous Saudi-led coalition airstrikes. However, the cranes have not been delivered to Yemen and are being stored in Dubai. According to one account, the World Food Program received permission from the Saudi-led coalition to deliver the cranes to Hodeida in early 2017, but permission was eventually revoked due to concern over ongoing military operations in the area.20

    In March 2017, several House members wrote a letter to Secretary of State Rex Tillerson urging him to "use all U.S. diplomatic tools to help open the Yemeni port of Hodeida to international humanitarian aid organizations to allow them to import food, fuel and medicine into northern Yemen and save the lives of hundreds of thousands of Yemeni children who face starvation."

    Iranian Arms Shipments to the Houthi-Saleh Forces

    Recent statements by U.S. officials indicate that Iran has increased weapons shipments to Houthi-Saleh forces in Yemen. In February 2017, Major General Qassem Soleimani, commander of the Islamic Revolutionary Guard Corps—Qods Force, reportedly pledged to increase Iran's assistance to Houthi-Saleh forces.21 In late October 2016, after Houthi-Saleh forces targeted U.S. warships in the Bab Al Mandab, Vice Admiral Kevin Donegan, the head of U.S. Naval Forces Central Command, said "We believe that Iran is connected to this."22 The vice admiral also noted that since April 2015, U.S. warships have intercepted five Iranian shipments of weaponry to Houthi-Saleh forces.23 In September 2015, coalition naval forces, which have blockaded Yemen's ports, seized an Iranian fishing boat carrying, according to a coalition spokesperson, taking "18 anti-armored concourse shells, 54 anti-tank shells, shell-battery kits, firing guidance systems, launchers and binoculars' batteries."24 In addition to maritime smuggling, Iran reportedly also has used overland routes through Oman to ship arms to Houthi-Saleh forces. According to one unnamed U.S. official, "We have been concerned about the recent flow of weapons from Iran into Yemen and have conveyed those concerns to those who maintain relations with the Houthis, including the Omani government."25

    Other recent reports surrounding Iranian support for Houthi-Saleh forces include26:

    • On February 5, 2017, Houthi-Saleh forces declared that an extended long-range Scud missile ("Burkan-2") they had developed had struck deep into Saudi Arabian territory, landing near a military base near Al Muzahimiyah, southwest of the capital Riyadh. According to one report, "the unveiling of the Burkan-2 is likely to heighten suspicions that Iran is helping Yemen's rebel forces to develop their ballistic missile capabilities." 27
    • In late January 2017, the UAE claimed that it had destroyed an "Iranian military drone" stationed in the port of Mokha.28
    • On January 30, 2017, a Houthi-Saleh unmanned, remote-controlled craft filled with explosives attacked a Saudi frigate (Al Madinah). Some observers have charged that Iran may have played a role in supplying the equipment used to create what some sources have referred to as a "drone boat."29
    • In January 2017, the United Nations UNSCR 2140 Committee Meeting on Panel of Experts' issued its final report, concluding, among other things, that although there had possibly been small-scale shipments of weapons, it had not seen sufficient evidence to confirm any direct large-scale supply from Iran.30 The Panel noted that "there are indicators that anti-tank guided weapons being supplied to the Houthi or Saleh forces are of Iranian manufacture."31
    • In early January 2017, the Australian government released photographs of anti-armored weapons seized from a smuggling vessel off of Yemen's coast. The rocket propelled grenades displayed in the pictures are believed to have been manufactured in Iran.32

    The Coalition's Maritime Blockade and Delivery of Emergency Aid

    United Nations Security Council Resolution 2216 authorizes member states to prevent the transfer or sale of arms to the Houthis or to former President Saleh and also allows Yemen's neighbors to inspect cargo suspected of carrying arms to Houthi fighters. Iran reportedly continues to support Houthi militias with weapons shipments, fueling the resolve of the Saudi-led coalition to thwart Iranian weapons smuggling by sea. However, while the coalition's naval blockade has periodically intercepted Iranian arms shipments, it also has slowed the delivery of humanitarian aid. Near the Red Sea port city of Hodeida, which is controlled by Houthi-Saleh forces, ships filled with food and fuel routinely sit off-shore, as Arab coalition vessels search them for illicit arms.33

    The UN Verification and Inspection Mechanism (UNVIM) is a UN-led operation designed to inspect incoming sea cargo to Yemen for illicit weapons. UNVIM can inspect cargo, while also ensuring that humanitarian aid is delivered in a timely manner. Its participants are the European Union, the Netherlands, New Zealand, the United Kingdom and the United States.

    Figure 2. Houthi-Saleh Forces Display the "Burkan-2" Missile

    Source: An image released by the pro Houthi-Saleh SABA News Agency on February 6, 2017, Jane's Defence Weekly, February 8, 2017

    Humanitarian Situation

    In a country of approximately 27.4 million people with chronic natural resource and food shortfalls, Yemen is facing an unprecedented humanitarian crisis. Public health figures and statistics below indicate the degree of human suffering.

    • According to the World Food Program, an estimated 7.3 million Yemenis are in need of immediate food aid. According to UNICEF, as many as 462,000 children suffer from severe acute malnutrition.
    • According to the World Health Organization, 14.8 million people lack access to basic health care.
    • There are over 2 million internally displaced in persons in Yemen.34
    • Since March 2015, 10,000 children under the age of five have perished from preventable diseases such as diarrhea and pneumonia.

    Aid agencies consider Yemen as one of the current "four famines" (in or near-famine - the others being South Sudan, Somalia, and northeastern Nigeria). In March 2017, the World Food Program reported that while Yemen is not yet a full-blown famine, 60% of Yemenis, or 17 million people, are in "crisis" or "emergency" food situations.

    Yemen's Banking Crisis

    Approximately a quarter of all Yemenis' livelihoods depend on the salary of a public sector employee. Government salaries are paid by the Central Bank, which, throughout the current conflict, had managed to stay relatively apolitical. However, after the August 2016 breakdown in peace talks, President Hadi moved the Central Bank's operations to Aden, accusing Houthi-Saleh forces of adding thousands of militiamen to the Ministry of Defense's payroll, which had been drawing down $100 million a month in foreign reserves.35 With total reserves dwindling, President Hadi announced in late February 2017 that Saudi Arabia would provide a two billion dollar deposit in the Central Bank in Aden to shore up the [Yemeni] riyal.

    Transnational Terrorist Groups Operating in Yemen

    Al Qaeda in the Arabian Peninsula (AQAP)

    Al Qaeda in the Arabian Peninsula (AQAP) has been described by U.S. officials as "the most active and dangerous affiliate of al-Qa'ida today,"36 with "several thousand adherents and fighters" inside of Yemen.37 The group has operated in Yemen since 2009, and its chief area of activity has been in the southern provinces that were formerly part of the People's Democratic Republic of Yemen, which reunited with northern Yemen in 1990. After unification, political and economic power became concentrated in the hands of northern leaders and tribes, and AQAP has benefitted from southern resentment directed against the government.

    In 2010, the United States designated AQAP as a Foreign Terrorist Organization (FTO). On October 4, 2012, the State Department designated Ansar al Sharia (AAS), AQAP's local militia, as a Foreign Terrorist Organization (FTO).

    According to the State Department's 2015 Country Reports on Terrorism, AQAP has continued to take advantage of the political and security vacuum created by the ongoing fighting between the Saudi-led coalition and Houthi-Saleh forces. The conflict between these forces has contributed to AQAP's attempted expansion in the southern and eastern parts of Yemen since 2015. According to the International Crisis Group:

    AQAP is stronger than it has ever been. While Islamic State has dominated headlines in other parts of the Middle East and North Africa, in Yemen, al Qaeda has been the success story. Over the course of the country's failed political transition and civil war, it has exploited state collapse, shifting alliances, a burgeoning war economy and growing sectarianism to expand its support base, challenge state authority and even govern territory at times. 38

    Perhaps more than any other AQ affiliate, AQAP has attempted to carry out attacks in the United States and Europe. Between 2009 and 2012, AQAP was behind three attempts to down U.S.-bound commercial airliners, and officials note that the group likely "still harbors this intent and substantial capability to carry out such a plot."39 In early 2015, AQAP claimed to have directed and funded the attack against the Charlie Hebdo satirical magazine in Paris.40

    In December 2016, the outgoing Administration outlined what had been the contours of U.S. counterterrorism policy toward AQAP under President Obama. According to a White House report:

    The U.S. military continues to work closely with the Government of Yemen to dismantle operationally and ultimately eliminate the threat posed by al-Qa'ida in the Arabian Peninsula (AQAP). U.S. joint efforts have resulted in direct action, including airstrikes, against a limited number of AQAP operatives and senior leaders who posed a terrorist threat to the United States. The United States has also deployed small numbers of U.S. military personnel to Yemen to support operations against AQAP, including support for operations to capture AQAP leaders and key personnel. Additionally, on October 12, 2016, the United States conducted military strikes on radar facilities in Houthi-controlled territory in Yemen in response to anti-ship cruise missile launches that threatened U.S. Navy warships in the international waters of the Red Sea on October 9 and October 12, 2016. The targeted radar facilities were involved in the October 9, 2016 launches and other recent attacks.41

    After taking office, President Trump reportedly authorized an increase in U.S. airstrikes against AQAP.42 In early March 2017, the United States reportedly conducted over 40 airstrikes against AQAP inside Yemen, which U.S. officials said were coordinated with the Hadi government and were concentrated in the governorates of Abyan, Al Bayda and Shabwah.43

    AQAP Attacks against Americans in Yemen

    The following is a list of AQAP attacks against Americans and U.S. government personnel in Yemen. It does not include U.S. combat deaths in military operations inside Yemen. Since Yemeni and Saudi militants merged to form AQAP in 2009, no U.S. civilians have been killed by a direct AQAP terrorist attack in the continental United States. However, the late Yemeni-American cleric and AQAP terrorist Anwar al Awlaki either directly motivated or indirectly inspired others to commit terrorist attacks on U.S. soil, such as the mass killing at Ford Hood, Texas, in November 2009. The most lethal Al Qaeda attack against the United States inside Yemen was the bombing of the USS Cole in October 2000, when an explosives-laden motorboat detonated alongside the U.S. Navy destroyer while it was docked at the Yemeni port of Aden, killing 17 U.S. servicemen and wounding 39 others.

    • On December 6, 2014, AQAP militants shot and killed American journalist Luke Somers, who had been held hostage since 2013, during a joint U.S.-Yemeni rescue attempt.
    • On March 11, 2012, AQAP gunmen on motorcycles shot to death a 29-year-old American teacher working in Taiz, Yemen named Joel Wesley Shrum. He had been an employee of the non-governmental organization International Training Development. The FBI and the U.S. Department of State have offered a reward of up to $5 million for information leading to the arrest of any individual who committed, conspired to commit, or aided or abetted in the murder of U.S. citizen Joel Wesley Shrum.
    • Months before the official formation of AQAP, in September 2008, Yemeni militants attacked the entrance of the U.S. Embassy in Sana'a, killing 17 people including six of the attackers. One American, Susan Elbaneh, was killed.

    To date, reported U.S. strikes against AQAP have led to the killings of several high value AQAP targets, including:

    • AQAP leader and deputy leader of AQ central Nasser al Wuhayshi (June 2015).
    • Nasser bin Ali al Ansi, AQAP leader who claimed responsibility for the Charlie Hebdo attack in Paris (April 2015).
    • Ibrahim Suleiman al Rubaysh, AQAP's theological guide and a former detainee at Guantanamo Naval Station, Cuba (April 2015).
    • Fahd al Quso, a longtime Yemeni militant wanted by the F.B.I. for his role in the 2000 bombing of the U.S.S. Cole (May 2012).
    • extremist cleric/U.S.-citizen Anwar al Awlaki (September 2011).

    January 2017 Counterterrorism Raid Inside Yemen

    A recent counterterrorism raid in Yemen generated debate regarding the operation's success following the death of Navy SEAL William "Ryan" Owens. The raid also cost the United States a $75 million aircraft and potentially claimed the lives of between four and twelve Yemeni civilians, including several children, one of whom was a U.S. citizen. The raid was the Trump Administration's first acknowledged counterterror operation.

    On January 29, a team of Emirati and U.S. Special Forces entered the remote Yemeni village of Yaklaa at approximately 1:00 a.m. to target AQAP-sympathizer and local tribal leader Abdul Raoof al Dhahab.44 Despite his status as a counterterrorism target, Al Dhahab had recently agreed to fight the Houthi rebels in support of the U.S.-backed Hadi government. Yemeni officials report that U.S. forces used nonlethal grenades and suppressed rifles as they approached the residences of al Dhahab and another target. In a surprise counterattack, AQAP fighters responded with gunfire and grenades as they retreated to nearby buildings with women and children. Unable to disengage, American forces retreated under the cover of air support. A Marine Quick Reaction Force aircraft heading to assist the raid had to be scuttled after losing power and landing in enemy territory. The counterattack wounded Navy SEAL Chief Petty Officer William "Ryan" Owens, who later died of his wounds. Al Dhahab was also killed. Yemeni officials claim at least eight women and seven children, ages 3-13, died in the attack, including the daughter of the late American-born AQAP leader Anwar al Awlaki. The Defense Department has since confirmed that children were among the casualties.

    The Islamic State

    The Islamic State (IS, also known as ISIL, ISIS, or the Arabic acronym Da'esh) claims to have several provinces operating in Yemen, where it has targeted Zaydi Shi'a, including their mosques. These types of attacks may increase sectarian tension in Yemen, which, though wracked by war, has not traditionally had the kind of sectarian animosity that has plagued states such Iraq and Lebanon. Leadership and tactical disputes appear to have limited the Yemen-based IS affiliates' success to date, as has competition from rivals in the larger and more deeply rooted AQAP organization.

    U.S. Policy

    During the last year of the Obama Administration, U.S. policy toward the conflict in Yemen shifted toward a more nuanced approach after initially emphasizing strong support for the Saudi-led coalition's campaign and the restoration of Hadi's presidency. The Obama Administration called for a political settlement that the parties themselves negotiate, emphasizing that "we're on the side squarely of the Yemeni people,"45 while also stressing that Saudi Arabia itself is under daily attack and has a right to defend itself. The Administration sought to work multilaterally through the United Nations to pursue a cease-fire that would—in the expressed hopes of the Administration—ultimately jumpstart negotiations toward a comprehensive political settlement to the conflict.

    Given that those efforts did not succeed, some observers expect the Trump Administration to take a different approach toward the conflict by more openly trying to deter Iranian support for Houthi-Saleh forces and refraining from openly criticizing the Saudi-led coalition's conduct of the war.46 In mid-February 2017, Secretary of State Rex Tillerson held a meeting on Yemen with counterparts from the United Kingdom, Saudi Arabia, Oman, the United Arab Emirates, and the United Nations to see how the international community can work together to strengthen cooperation to resolve the conflict. Afterward, Secretary Tillerson noted "the urgent need for the unfettered delivery of humanitarian assistance throughout Yemen."

    In early February 2017, the United States sent the guided missile destroyer USS Cole to position itself off the coast of Yemen on a presence operation following a Houthi-Saleh "drone boat" attack on a Saudi frigate. In 2000, 17 American sailors were killed by an Al Qaeda (AQ) attack against the USS Cole while it docked in the port of Aden. Two other U.S. naval vessels, the USS Makin Island, an amphibious assault ship, and the USS Comstock, a dock landing ship, are operating near the Bab al Mandab strait.47

    Debating U.S. Military Support for the Saudi-led Coalition48

    As the Saudi-led coalition's military campaign has continued, repeated reports of Yemeni civilian casualties resulting from air strikes has fueled intensifying international criticism of Saudi policy. Congress has debated the provision of U.S. military assistance to Saudi Arabia in the context of the conflict, and the Senate in September 2016 rejected a proposal (S.J.Res. 39) that would have blocked a proposed sale of tanks to the kingdom.

    In the wake of an October 2016 Saudi airstrike on a funeral hall in Sanaa that killed 140 people, the Obama Administration announced that it was initiating a review of U.S. security assistance to Saudi Arabia. In December 2016, press reports cited Obama Administration officials as stating that a planned direct commercial sale (DCS) of 16,000 Raytheon-manufactured precision guided munitions (or PGMSs), worth approximately $350-$390 million, would not proceed and that U.S. intelligence sharing would be further limited in favor of enhanced training for the Saudi Air Force.49 The Obama Administration noted that U.S.-Saudi intelligence cooperation against AQAP would continue, as well as U.S. support for the defense of Saudi Arabia's border with Yemen. The United States also said that it would continue to refuel Saudi aircraft. A U.S. Central Command Air Force spokesperson reported in February 2017 that U.S. military refueling missions for Saudi-coalition operations over Yemen increased by 50% in 2016 relative to 2015 and are ongoing.50

    Press reporting in March, 2017 has suggested that the Trump Administration may consider moving forward with the sale of the munitions kits, but as of March 21, the Administration had not moved to formally notify Congress of its intent to do so. One report suggests that Secretary of State Rex Tillerson approved an unspecified "resumption of weapons sales" to Saudi Arabia.51 The last major U.S. defense sale of PGMs to Saudi Arabia was in November 2015, when the Obama Administration notified Congress of a proposed sale, and Members did not introduce joint resolutions of disapproval during the 30-calendar-day consideration period.52 In March 2017 testimony before the Senate Foreign Relations Committee, Dafna Rand, former deputy assistant secretary of state at the State Department's Bureau of Democracy, Human Rights and Labor, testified that:

    The precision-guided munitions were transferred in 2015 on the hopes that indeed, as you were saying Senator, they would enable better and more precise targeting by the Collation of the target itself. That was the argument....What we've seen since is not an improvement in the targeting and the issue itself is the target selection. It's not the precision of the target itself, but it's the choice of targets and adherence to the no strike list.53

    Pursuant to Section 36(c) of the Arms Export Control Act, the executive branch may proceed with a proposed direct commercial sale (DCS) case 30 days after formally notifying Congress. If the Trump Administration were to decide to proceed with this specific DCS case or to generate a new Foreign Military Sale (FMS) or DCS case, it would have to formally notify Congress pursuant either Section 36 (b) or 36(c) and then wait at least 30 days before taking action on the proposed sale.

    Attacks Against U.S. Naval Vessels in the Red Sea

    In October 2016, Houthi-Saleh forces reportedly launched anti-ship missiles at U.S. Navy vessels on patrol off the coast of Yemen. While no U.S. warship was damaged, a similar attack earlier in October damaged a U.S. transport ship leased by the United Arab Emirates (UAE). The attacks against the U.S. ships marked the first time U.S. forces had come under direct fire in the near 20-month war.

    The attacks may have been triggered by Saudi-led coalition airstrikes on October 8 that struck a funeral gathering of Houthi leaders in the capital Sana'a. Those strikes, which the coalition later described as having been mistakenly authorized, killed many civilians and prominent Houthi political and military leaders. Included among the casualties was the mayor of Sana'a, two Yemeni members of the U.N. cease-fire monitoring team, and several Houthi-Saleh high-ranking officers.

    Such events in Yemen elicited a multi-pronged Obama Administration response. On the military front, the Obama Administration responded to the attacks against U.S. naval vessels by firing cruise missiles against Houthi-Saleh radar installations. The Obama Administration claimed that those attacks were conducted in self-defense and indicated that it did not want to deepen its direct involvement in the conflict. The October 8 Saudi airstrikes drew immediate condemnation and prompted the Obama Administration to initiate an "immediate review" of U.S support for the Saudi-led coalition's military campaign. U.S. support had already been reduced in the preceding months amid concern that the coalition's repeated targeting of civilians was a violation of international law. From a diplomatic angle, the Obama Administration accelerated its efforts to broker a ceasefire in the hopes of deescalating the situation.

    U.S. Foreign Assistance to Yemen

    Since the current conflict began in March 2015, the United States has increased its humanitarian assistance to Yemen while suspending nearly all other programming. On February 11, 2015, due to the deteriorating security situation in Sana'a, the Department of State suspended embassy operations and U.S. Embassy staff was relocated out of the country.

    Since March 2015, the United States has been the largest contributor of humanitarian aid to Yemen. Funds were provided to international aid organizations from USAID's Office of Foreign Disaster Assistance (OFDA), USAID's Food for Peace (FFP), and the U.S. Department of State's Bureau of Population, Refugees, and Migration (State/PRM).

    Table 2. Yemen Humanitarian Response

    (in millions of dollars)

    Account

    FY2011

    FY2012

    FY2013

    FY2014

    FY2015

    FY2016/FY2017

    IDA (USAID/OFDA)

    14.974

    29.574

    36.987

    34.858

    62.029

    107.588

    FFP (UDAID/FFP)

    20.200

    67.856

    75.046

    70.000

    71.486

    264.988

    MRA (State/PRM)

    22.500

    19.738

    18.885

    8.900

    45.300

    55.050

    Total

    58.346 (includes .672 from OTI)

    117.168

    130.919

    113.758

    178.816

    427.626

     

     

     

     

     

     

     

    Source: Yemen, Complex Emergency—USAID Factsheets.

    U.S. bilateral economic funding supports basic education, maternal health, and agricultural assistance programs. Given the breakdown of Yemen's military, security assistance channeled through the State and Defense Departments has been suspended. In June 2015, the Department of Defense notified Congress that it was redirecting $45.04 million worth of military equipment (obligated in FY2012, FY2013, and FY2014) to Tunisia, Jordan, and Lebanon.

    Table 3. U.S. Bilateral Assistance to Yemen: FY2014-2016

    (in millions of dollars)

    Account

    FY2014

    FY2015

    FY2016

    ESF

    13.000

    19.200 (OCO)

    29.300 (OCO)

    Global Health

    9.000

    9.000

    5.000

    FMF

    20.0

    IMET

    1.109

    0.127

    INCLE

    3.000

    1.000

    1.000 (OCO)

    NADR

    3.920

    3.150

    6.000

    DoD (1206/2282)

    64.000

    Total

    114.029

    32.477

    41.300

    Source: USAID Country Narrative

    Author Contact Information

    [author name scrubbed], Specialist in Middle Eastern Affairs ([email address scrubbed], [phone number scrubbed])

    Footnotes

    "U.S. Plan to help Yemenis obtain Humanitarian Aid Falters, amid Growing Food Crisis," Washington Post, March 15, 2017.

    1.

    The coalition includes Qatar, Kuwait, the United Arab Emirates, Bahrain, Egypt, Morocco, Jordan, Sudan, and Senegal. The Saudi-led coalition also relies on local Yemeni forces to carry out most ground operations. These allied units comprise a mix of Yemeni army units, tribal forces, Islamist militias, and southern separatists opposed to Houthi rule.

    2.

    The degree of Iran's military role in Yemen is a subject of much debate. Iran has been caught on multiple occasions attempting to smuggle weapons to the Houthis (see below). In repeated public statements by high level Saudi officials, Saudi Arabia has cited Iran's illicit support for the Houthis as proof that Iran is to blame for the Yemen conflict. Iranian support to the Houthis provides the clerical regime with a relatively low cost way of countering Saudi influence in Yemen. Saudi officials frequently justify their intervention in Yemen as a defensive action in order to prevent "the country [Yemen] being taken over by a radical militia [Houthis] allied with Iran and Hezbollah." However, many Western observers generally agree that Iranian aid to the Houthis does not match the scale of its commitments to proxies in other parts of the Middle East, such as in Syria, Lebanon, and Iraq.

    3.

    The Houthi movement (also known as Ansar Allah or Partisans of God) is a predominantly Zaydi Shiite revivalist political and insurgent movement that formed in the northern province of Sa'da in 2004 under the leadership of members of the Houthi family. It originally sought an end to what it viewed as efforts to marginalize Zaydi communities and beliefs, but its goals grew in scope and ambition in the wake of the 2011 uprising and government collapse to embrace a broader populist, anti-establishment message. Skeptics highlight the movement's ideological roots, its alleged cooperation with Iran, and the slogans prominently displayed on its banners: "God is great! Death to America! Death to Israel! Curse the Jews! Victory to Islam!"

    4.

    Text of Hadi request letter in "GCC statement: Gulf countries respond to Yemen developments," The National (UAE), March 26, 2015.

    5.

    "Yemen War Turns Two, Al Monitor, March 12, 2017.

    6.

    "Rise of Saudi Prince Shatters Decades of Royal Tradition," New York Times, October 15, 2016.

    7.

    Yemen's Zaydis take their name from their fifth Imam, Zayd ibn Ali, grandson of Husayn. Zayd revolted against the Umayyad Caliphate in 740, believing it to be corrupt, and to this day, Zaydis believe that their imam (ruler of the community) should be both a descendent of Ali (the cousin and son-in-law of the prophet Muhammad) and one who makes it his religious duty to rebel against unjust rulers and corruption. A Zaydi state (or Imamate) was founded in northern Yemen in 893 and lasted in various forms until the republican revolution of 1962. Yemen's modern imams kept their state in the Yemeni highlands in extreme isolation, as foreign visitors required the ruler's permission to enter the kingdom. Although Zaydism is an offshoot of Shia Islam, its legal traditions and religious practices are similar to Sunni Islam. Moreover, it is doctrinally distinct from "Twelver Shiism," the dominant branch of Shi'a Islam in Iran and Lebanon.

    8.

    Top UN Official: 10,000 Civilians Killed in Yemen Conflict, Associated Press, January 16, 2017.

    9.

    "Yemen: 'Some people are living on one piece of bread a day'," The Guardian, June 8, 2016.

    10.

    "Border Fight could shift Saudi Arabia's Yemen War Calculus," PolicyWatch # 2736, Washington Institute, December 6, 2016.

    11.

    "UN Envoy to Yemen hands peace plan outline to rival parties," Associated Press, October 25, 2016.

    12.

    "Houthis Criticise Special Envoy as UN looks to Restart Talks," Economist Intelligence Unit, February 14, 2017.

    13.

    In July 2016, Houthi-Saleh forces formed the High Political Council to govern areas under their control.

    14.

    Three years ago, the Houthi movement rejected the final outcome of the 2014 National Dialogue, which sought to reconfigure Yemen's governance in a more equitable fashion by bringing all parties to a months-long conference. The conference ended when President Hadi proposed to divide Yemen into six federal regions that would leave the traditional Houthi territorial base as one land-locked province without access to a seaport or oil resources.

    15.

    Testimony of Gerald Feierstein, Director, Center for Gulf Affairs, Middle East Institute, Senate Foreign Relations Committee Hearing, "Resolving the Conflict in Yemen: U.S. Interests, Risks, and Policy," March 9, 2017.

    16.

    "New Yemen offensive looks to Break Deadlock," Agence France Presse, January 9, 2017.

    17.

    "Government Advance adds to Famine Concerns," Economist Intelligence Unit, March 2, 2017.

    18.

    "UN says Seven Million Yemenis on Brink of Starvation," Middle East Online, February 21, 2017.

    19.

    "Escalation in Ship Attacks Pushes Yemen towards Starvation," Reuters, March 6, 2017.

    20.

    "U.S. Plan to help Yemenis obtain Humanitarian Aid Falters, amid Growing Food Crisis," Washington Post, March 15, 2017.

    21.

    "Iran Steps up Support for Houthis in Yemen's War – Sources," Reuters, March 21, 2017.

    22.

    "U.S. Officials: Iran Supplying Weapons to Yemen's Houthi Rebels," NBC News, October 27, 2016.

    23.

    "US intercepts Multiple Shipments of Iranian Weapons going to Houthis in Yemen," CNN, October 28, 2016.

    24.

    "Weapons Bound for Yemen Seized on Iran Boat: Coalition," Reuters, September 30, 2015.

    25.

    "Exclusive: Iran steps up Weapons Supply to Yemen's Houthis via Oman—Officials," Reuters, October 20, 2016.

    26.

    See, "Maritime Interdictions of Weapon Supplies to Somalia and Yemen: Deciphering a Link to Iran," Conflict Armament Research, November 2016.

    27.

    "Analysis: New Yemeni ballistic Missile hints at Iranian Assistance," Jane's Defence Weekly, February 8, 2017.

    28.

    "UAE Airstrike reportedly Destroyed Iranian UAV in Yemen," Jane's Defence Weekly, February 3, 2017.

    29.

    "New Houthi Weapon Emerges: A Drone Boat," Defense News, February 19, 2017.

    30.

    "Yemen: Political and Humanitarian Briefing and Sanctions Committee Meeting," What's in Blue, January 25, 2017.

    31.

    Letter dated 27 January 2017 from the Panel of Experts on Yemen addressed to the President of the Security Council, January 31, 2017.

    32.

    "Arms Seized Off Coast of Yemen Appear to Have Been Made in Iran," New York Times, January 10, 2017

    33.

    "Arab Coalition Navy Inspections Paralyze Yemen Food Shipments," Reuters, September 10, 2015. Reportedly, the United States has said that commercial vessels off the coast of Yemen should only be inspected when there are "reasonable grounds" to suspect illicit arms shipments. See, "U.S. tells U.N. it Wants to See Boost in Shipping into War-Torn Yemen," Reuters, September 30, 2015.

    34.

    USAID, Yemen Complex Emergency Fact Sheet #6, Fiscal Year (FY) 2017, February 17, 2017.

    35.

    "Central Bank Crisis Risks Famine in Yemen," International Crisis Group, September 29, 2016.

    36.

    The White House, Letter from the President to the Speaker of the House of Representatives and the President Pro Tempore of the Senate Regarding the War Powers Resolution, June 13, 2016.

    37.

    Transcript, CIA Director John Brennan before the Senate Select Intelligence Committee, June 16, 2016.

    38.

    "Military Strikes Are No Simple Answer to al-Qaeda's Rise in Yemen," International Crisis Group, February 1, 2017.

    39.

    Testimony of former NCTC Director Matthew Olsen before the House Homeland Security Committee and House Foreign Affairs Committee, Joint Hearing on Terrorism Outlook, November 18, 2015.

    40.

    "Al Qaeda in Yemen Claims Responsibility for Charlie Hebdo Attack," Wall Street Journal, January 14, 2015.

    41.

    Report on the Legal and Policy Frameworks Guiding the United States' Use of Military Force and Related National Security Operations, White House, December 2016.

    42.

    "U.S. Air Campaign in Yemen Killed Guantánamo Ex-Prisoner," New York Times, March 6, 2017.

    43.

    "Yemen Airstrikes Not Guided By Intel from SEAL Raid: Senior Official," Military.com, March 3, 2017.

    44.

    "A Raid in Remote Yemen and a SEAL's Death still Reverberate for Trump," Washington Post, March 1, 2017.

    45.

    John Kirby, Spokesperson, U.S. State Department, Daily Press Briefing, Washington, DC, November 1, 2016.

    46.

    "Washington Turns Its Focus to Yemen, Pleasing Saudis," Wall Street Journal, February 10, 2017.

    47.

    "Pentagon: USS Cole off Yemen Coast to Respond to Threats," Stars and Stripes, February 3, 2017.

    48.

    For additional background, see: CRS Insight IN10557, Saudi Military Campaign in Yemen Draws Congressional Attention to U.S. Arms Sales, by [author name scrubbed], [author name scrubbed], and [author name scrubbed], and CRS Report RL33533, Saudi Arabia: Background and U.S. Relations, by [author name scrubbed]

    49.

    "U.S. Blocks Arms Sale to Saudi Arabia amid Concerns Over Yemen War," New York Times, December 13, 2016.

    50.

    "2 Years Into Yemen War, US Ramps Up Refueling of Saudi Jets," Military Times, February 15, 2017.

    51.

    "Trump administration looks to resume Saudi Arms sale criticized as Endangering Civilians in Yemen," Washington Post, March 8, 2017.

    52.

    After the formal notification in November 2015, Senate Foreign Relations Committee leaders jointly requested that the Administration notify Congress 30 days prior to associated shipments. The pre-shipment notification would inform Congress that a shipment was about to occur, but would not require or preclude Congress from taking further action to modify or block the shipment.

    53.

    Testimony of Dr. Dafna Rand, Adjunct Senior Research Fellow, National Defense University, Senate Foreign Relations Committee Hearing, "Resolving the Conflict in Yemen: U.S. Interests, Risks, and Policy," March 9

    The Saudi-led coalition launched air strikes in response to a specific request from President Hadi. In a letter to the heads of state of the Gulf Cooperation Council on March 24, 2017. President Hadi wrote: "I urge you, in accordance with the right of self-defence set forth in Article 51 of the Charter of the United Nations, and with the Charter of the League of Arab States and the Treaty on Joint Defence, to provide immediate support in every form and take the necessary measures, including military intervention, to protect Yemen and its people from the ongoing Houthi aggression, repel the attack that is expected at any moment on Aden and the other cities of the South, and help Yemen to confront Al-Qaida and Islamic State in Iraq and the Levant."5

    There are a number of reasons as to why Saudi Arabia intervened in Yemen, not all of which are mutually exclusive. Some suggest that the Saudis launched military operations out of fear that Yemen, under Houthi-Saleh rule, would fall under Iranian influence.6 Others charge that Saudi fears of Iranian expanding regional influence are overblown and that the kingdom intervened to secure its southern border. 7 Some reports suggest that the Saudis viewed this military campaign as an opportunity to burnish the credentials of the young and then newly appointed Defense Minister (and now Crown Prince), Prince Mohammed bin Salman.8

    Latest Developments Former President Ali Abdullah Saleh Killed by Houthis

    The Houthi-Saleh partnership, which had been under strain for months, ended abruptly in early December 2017, culminating in the killing of former president Saleh on December 4. The Houthi-Saleh split had been brewing since spring 2017, when rumors of secret talks between Saleh and the Saudi-led coalition began circulating. The Houthis publicly accused Saleh of treason in August 2017,9 leading to violent exchanges between Houthis and Saleh loyalists.

    Intra-alliance fighting resumed in late November 2017 and, on December 2, 2017, Saleh gave a speech in which he called for the Saudi-led coalition to ease its blockade of Yemen, promising in return to "turn a new page by virtue of our neighborliness."10 The Saudi-led coalition welcomed Saleh's remarks, and even began conducting air strikes against Houthi positions around the capital Sana'a. In response, the Houthis moved against Saleh's forces in the political district of the capital. On December 3, 2017, Saleh formally annulled his alliance with the Houthis. A day later, former president Saleh was killed while trying to escape the capital after days of violent confrontation between his loyalists and his former Houthi partners.

    Saleh's death and the end of the Houthi-Saleh partnership may change the Yemen war in numerous ways. In the short term, it could set back the Saudi-led coalition's attempt to gain advantage in the conflict; it now faces a more ideologically determined enemy, who may be less willing to negotiate an immediate political settlement. According to one expert, "If Saudi Arabia wanted a negotiated exit, that opportunity seems lost for now."11 In the weeks and months ahead, it appears that the Houthis may attempt to consolidate control over geographic areas previously held by Saleh loyalists.

    However, even if the Houthis succeed in consolidating control over most of northern Yemen, in the long term, their forces may be stretched thin, as it also appears that Saleh's son, Ahmed Ali Saleh, who had been in the UAE (first as Yemen's ambassador there and then under "house arrest"), may seek to return to Yemen and lead his father's forces against the Houthis. Ahmed Ali has reportedly traveled from the UAE to Riyadh to lead a new ground offensive against the Houthis.12 On December 5, Ahmed Ali was quoted on Saudi television stating, "I will lead the battle until the last Houthi is thrown out of Yemen."13

    The end of the Houthi-Saleh alliance also raises the possibility that the Saudi-led coalition may increase its efforts to capture key Yemeni cities, such as Taiz, Sana'a, and Hodeida. According to one analysis by Jane's:

    The collapse of the alliance is now presenting Saudi Arabia with an exit strategy from the Yemeni conflict as the coalition can now build a single front against the Houthi-dominated government in Sana'a by co-opting Saleh's Republican Guards, Special Forces, and Sunni tribal militias who can attack the Houthis in the north, around Sana'a and in Taiz. Even if the Houthis are successful in defeating Saleh loyalists in Sana'a, they will not be able to prevent coalition-backed forces from surrounding the capital, or of resisting a prolonged siege. Although the increasing isolation of the Houthis might force the movement to sit down at a negotiating table, in the meantime the collapse of the alliance signifies a sudden escalation of the Yemen civil war.14

    Houthi Missile Attack and Port Closure

    Infighting between Houthi and Saleh forces was preceded by a weeks' long Saudi-led coalition closure of the main commercial port of Hodeida, which the coalition fully blockaded after the Houthis fired a ballistic missile deep into Saudi territory on November 4. While Saudi Arabia claims to have intercepted the missile using U.S.-supplied Patriot missile batteries, according to one account, "the missile's warhead flew unimpeded over Saudi defenses and nearly hit its target, Riyadh's airport [King Khalid International Airport]."15 In response to the missile attack, the coalition then announced that it was temporarily closing all Yemeni ports, including the main commercial port of Hodeida, on November 6, 2017. A week later, the Saudi-led coalition did permit ports in allied government-controlled territory to open (Aden), though all northern Yemeni ports remained closed.

    It is unclear what, if any, negative political or economic effects the blockade placed on Houthi-Saleh forces, but humanitarian officials and advocates warned of the blockade's effects on Yemeni citizens. In the days and weeks following the November 4 closure, food and fuel supplied in northern Yemen dwindled, and gas and water prices skyrocketed, leading international aid agencies to warn of impending famine. On November 20, the Famine Early Warning Systems Network (Fews Net) issued an alert, warning that "if all ports remain closed, or re-open but are unable to support large-scale imports of essential goods, Famine is likely in many areas of the country within three to four months. In less accessible areas with the most severe current food insecurity, Famine could emerge even more quickly."16 During the blockade, aid agencies announced that five cities had run out of clean water (Sa'ada, Taiz, Hodeida, Sana'a and al Bayda).17 Humanitarian agencies decried the closures, asserting that the Saudi-led coalition was violating international law by using starvation as a weapon.18 However, the Saudi-led coalition claimed that it was acting legally, citing Paragraph 14 of UNSCR 2216 (see below), which calls on states to take measures to prevent the supply of military goods to the Houthis.19

    The total closure of all Yemeni ports lasted until November 24, 2017, when the Saudi-led coalition announced that it would begin allowing humanitarian aid to resume entering Hodeida port. The White House responded by issuing a press statement welcoming the coalition's actions while further stating, "We look forward to additional steps that will facilitate the unfettered flow of humanitarian and commercial goods from all ports of entry to the points of need.... All sides must support a political process with facilitating humanitarian relief as the top priority. We remain committed to supporting Saudi Arabia and all our Gulf partners against the Iranian Islamic Revolutionary Guard Corps' aggression and blatant violations of international law.20" However, while the Saudi-led coalition lifted its blockade on select humanitarian deliveries, as of early December 2017, it is unclear whether the coalition is permitting commercial goods to be imported. 21 The United Nations Secretary General António Guterres has called for the urgent resumption of all commercial imports.

    Alleged Iranian Supply of Missiles to the Houthis

    The degree of Iran's military role in Yemen has long been a subject of much debate. Iran has been caught on multiple occasions attempting to smuggle weapons to the Houthis.22 In repeated public statements by high level Saudi officials, Saudi Arabia has cited Iran's illicit support for the Houthis as proof that Iran is to blame for the Yemen conflict. Iranian support to the Houthis provides the clerical regime with a relatively low-cost way of countering Saudi influence in Yemen. Saudi officials frequently justify their intervention in Yemen as a defensive action in order to prevent Yemen from being taken over by the Houthis.

    Recent Houthi missile launches against Saudi Arabia and the UAE have once again raised questions over possible Iranian direct supply of armaments or missile technology know-how to the Houthis. After the November 4 missile attack against King Khalid International Airport in Saudi Arabia, the Saudi-led coalition released photographs of what it said were remnants of an Iranian Qiam missile that had been launched from northern Yemen, an accusation reiterated by U.S. officials.23 On November 24, 2017, the U.N. Panel of Experts supporting the 2140 Yemen Sanctions Committee released an update of their assessment of the attack, concluding that the missile debris from the November 4 attack was consistent with Iranian-designed and manufactured missiles.24

    The Saudi-led coalition accuses Iran of supplying more sophisticated missile technology to the Houthis, and said in a statement that the November attack "could rise to be considered as an act of war" by Iran.25 The White House issued a statement following the November missile strike condemning Iran and standing with "Saudi Arabia and all our Gulf partners against the Iranian regime's aggression and blatant violations of international law. These missile systems were not present in Yemen before the conflict, and we call upon the United Nations to conduct a thorough examination of evidence that the Iranian regime is perpetuating the war in Yemen to advance its regional ambitions."26 On December 2, the Houthis claimed to have fired a missile at a nuclear power plant (al Barakah nuclear power plant) under construction in the United Arab Emirates (UAE). The UAE denied that a missile had been fired at their territory. 27 In a Houthi video depicting the missile launch, experts suggest that the missile depicted in the video resembles Iran's Soumar cruise missile, which is based on the Soviet-era KH-55, which Iran obtained from the Ukraine.28 Yemenis could have acquired the Soumar either on the black market or directly from Iran.

    Yemen at the United Nations

    As the war in Yemen approaches its fourth year, it has steadily evolved from a contest between competing local elites to a complex conflict involving a combination of Yemeni and foreign forces waging war in an increasingly fragmented landscape. While the conflicts in Syria, Iraq, and Libya have seem to have garnered more media attention than Yemen, the Yemen war has been a major focus of various United Nations entities and deliberative bodies since the Saudi coalition's intervention in March 2015.

    From the start of hostilities, Saudi Arabia was able to secure the support of the United Nations Security Council, a key development in providing the Saudi-led coalition with international approval for its intervention. On April 14, 2015, the United Nations Security Council adopted Resolution 2216, which imposed sanctions on individuals undermining the stability of Yemen and authorized an arms embargo against the Houthi-Saleh forces. It also demanded that the Houthis withdraw from all areas seized during the current conflict, relinquish arms seized from military and security institutions, cease all actions falling exclusively within the authority of the legitimate Government of Yemen, and fully implement previous Council resolutions.

    One of the key aspects of United Nations Security Council Resolution (UNSCR) 2216 is that it authorizes member states to prevent the transfer or sale of arms to the Houthis or to former President Saleh and also allows Yemen's neighbors to inspect cargo suspected of carrying arms to Houthi fighters. To implement this authority in UNSCR 2216, some member states (the European Union, Netherlands, New Zealand, United Kingdom and the United States) formed the UN Verification and Inspection Mechanism (UNVIM), a UN-led operation designed to inspect incoming sea cargo to Yemen for illicit weapons. UNVIM can inspect cargo, while also ensuring that humanitarian aid is delivered in a timely manner.

    Beyond the Security Council, the U.N. Special Envoy for Yemen Ismail Ould Cheikh Ahmed is one of the primary officials responsible for trying to broker a political settlement to the conflict. On humanitarian side, Mark Lowcock is the current head of the United Nations Office for the Coordination of Humanitarian Affairs (OCHA). OCHA categorizes Yemen as one of the most complex of humanitarian emergencies worldwide. Recent notable U.N. activities include the following:

    • In October 2017, the United Nations Secretary General released its 2016 report on children and armed conflict. The report noted that a total of at least 1,340 children were killed or maimed in the Yemen conflict in 2016.29
    • In September 2017, the United Nations Human Rights Council adopted a resolution that, among other things, condemned ongoing violations and abuses of human rights and violations of international humanitarian law in Yemen. It required that the U.N. High Commissioner for Human Rights establish a group of experts to monitor and report on the human rights situation in Yemen. Some members of the council had called for the establishment of an international commission of inquiry, which was not adopted.30
    • In June 2017, the Security Council issued a presidential statement on Yemen that, among other things, called on all parties to engage in peace negotiations, comply with international humanitarian law, and allow access for humanitarian supplies. The statement also sought an increase in commercial and humanitarian shipments through the main northern port of Hodeida.31
    • In April 2017 in Geneva, Switzerland, the United Nations sponsored an international donors' conference to secure $2.1 billion in funds to meet the 2017 Humanitarian Response Plan. At the conference, donors pledged $1.1 billion.
    Yemen's Humanitarian Crisis and U.S. Response

    Yemen is consistently described as one of the world's worst humanitarian crises. According to UN OCHA, out of a total population estimated at 29 million, 22.2 million Yemenis are in need of assistance and 11.3 million are in acute need. The United Nations often describes Yemen as "the world's largest man-made food security crisis."32 Whereas food is available in markets across the country, the war has hampered distribution networks and 1.25 million public employees have gone nearly a year without receiving salaries, which has contributed to a liquidity crisis in the banking sector. Aid agencies estimate that 17.8 million people are now food insecure.

    With millions of Yemenis lacking access to basic health care and clean water, sanitation, and hygiene (WASH) services, the country is experiencing the world's largest ongoing cholera outbreak. As of November 5, 2017, more than 900,000 suspected cholera cases and 2,200 associated Yemeni deaths were reported.

    Hodeida Port and Humanitarian Access

    The surrounding maritime space around Hodeida port remains under the control of the Saudi-led coalition, and even before its total closure on November 4, humanitarian access was challenging, as ships often have to undergo a clearance process involving inspections from both UNVIM and Saudi-led coalition forces. Hodeida port has been damaged, and there are a lack of berthing spaces and staffing shortages. Electricity availability also is sporadic. Shipping insurance costs also are higher for carriers destined for Hodeida. However, many international aid organizations would prefer to use Hodeida port, as shipping through Aden adds additional costs owing to the movement of aid overland through the current battle lines of control. In 2016, the United States took steps to repair the port of Hodeida by providing the World Food Program with funds to purchase four replacement cranes which had been damaged in previous Saudi-led coalition airstrikes. However, the cranes have not been delivered to Yemen and are being stored in Dubai. According to one account, the World Food Program received permission from the Saudi-led coalition to deliver the cranes to Hodeida in early 2017, but permission was eventually revoked due to concern over ongoing military operations in the area.33

    Since March 2015, the United States has been the largest contributor of humanitarian aid to Yemen. Funds were provided to international aid organizations from USAID's Office of Foreign Disaster Assistance (OFDA), USAID's Food for Peace (FFP), and the U.S. Department of State's Bureau of Population, Refugees, and Migration (State/PRM). Overall, the United Nations Yemen 2017 Humanitarian Response Plan is 57% funded with $1.3 billion funded of the $2.3 billion requested.

    Table 1. U.S. Humanitarian Response to the Complex Crisis in Yemen

    (in millions of dollars)

    Account

    FY2011

    FY2012

    FY2013

    FY2014

    FY2015

    FY2016

    FY2017

    IDA (USAID/OFDA)

    19.946

    45.087

    61.819

    49.858

    76.844

    81.528

    227.996

    FFP (UDAID/FFP)

    20.013

    54.803

    50.208

    55.000

    56.672

    196.988

    369.629

    MRA (State/PRM)

    22.500

    19.738

    18.886

    8.900

    45.300

    48.950

    38.125

    Total

    62.459

    119.628

    130.913

    113.758

    178.816

    327.466

    635.750

    Source: Yemen, Complex Emergency—USAID Factsheets.

    Author Contact Information

    [author name scrubbed], Specialist in Middle Eastern Affairs ([email address scrubbed], [phone number scrubbed])

    Footnotes

    1.

    The coalition includes Qatar, Kuwait, the United Arab Emirates, Bahrain, Egypt, Morocco, Jordan, Sudan, and Senegal. The Saudi-led coalition also relies on local Yemeni forces to carry out most ground operations. These allied units comprise a mix of Yemeni army units, tribal forces, Islamist militias, and southern separatists opposed to Houthi rule.

    2.

    The Houthi movement (also known as Ansar Allah or Partisans of God) is a predominantly Zaydi Shiite revivalist political and insurgent movement. Yemen's Zaydis take their name from their fifth Imam, Zayd ibn Ali, grandson of Husayn. Zayd revolted against the Umayyad Caliphate in 740, believing it to be corrupt, and to this day, Zaydis believe that their imam (ruler of the community) should be both a descendent of Ali (the cousin and son-in-law of the prophet Muhammad) and one who makes it his religious duty to rebel against unjust rulers and corruption. A Zaydi state (or Imamate) was founded in northern Yemen in 893 and lasted in various forms until the republican revolution of 1962. Yemen's modern imams kept their state in the Yemeni highlands in extreme isolation, as foreign visitors required the ruler's permission to enter the kingdom. Although Zaydism is an offshoot of Shia Islam, its legal traditions and religious practices are similar to Sunni Islam. Moreover, it is doctrinally distinct from "Twelver Shiism," the dominant branch of Shi'a Islam in Iran and Lebanon. The Houthi movement was formed in the northern Yemeni province of Sa'da in 2004 under the leadership of members of the Houthi family. It originally sought an end to what it viewed as efforts to marginalize Zaydi communities and beliefs, but its goals grew in scope and ambition in the wake of the 2011 uprising and government collapse to embrace a broader populist, anti-establishment message. Skeptics highlight the movement's ideological roots, its alleged cooperation with Iran, and the slogans prominently displayed on its banners: "God is great! Death to America! Death to Israel! Curse the Jews! Victory to Islam!"

    3.

    "Deep in Yemen War, Saudi Fight against Iran Falters," Reuters, November 9, 2017.

    4.

    The White House, Office of the Press Secretary, Statement from the Press Secretary on the Humanitarian Crisis in Yemen, November 24, 2017.

    5.

    United Nations Security Council, S/2015/217, March 27, 2015.

    6.

    "Yemen War Turns Two, Al Monitor, March 12, 2017.

    7.

    "Yemen's Humanitarian Nightmare, The Real Roots of the Conflict," Foreign Affairs, November/December 2017.

    8.

    "Rise of Saudi Prince Shatters Decades of Royal Tradition," New York Times, October 15, 2016.

    9.

    "Yemen war: Cracks emerge in Houthis-Saleh alliance," The National (UAE), August 20, 2017.

    10.

    "Yemen's Saleh says ready for 'new page' with Saudi-led coalition," Reuters, December 2, 2017.

    11.

    "Yemen's Ex-President Killed as Mayhem Convulses Capital," New York Times, December 4, 2017.

    12.

    "What's Ahead for Yemen Now That Saleh's Gone?" Stratfor, December 5, 2017.

    13.

    "Son of Slain Yemen Leader Is Said to Vow Revenge," New York Times, December 5, 2017.

    14.

    "Yemen," Jane's Intelligence Weekly, December 4, 2017.

    15.

    "Did American Missile Defense Fail in Saudi Arabia?" New York Times, December 4, 2017.

    16.

    "Alert: Famine (IPC Phase 5) likely in Yemen if Key Ports remain Closed," The Famine Early Warning Systems Network, November 20, 2017.

    17.

    "1-2.5 million Yemenis now lack access to clean water - Red Cross, " Reuters, November 21, 2017.

    18.

    "Saudi Claims to Ease Yemen Blockade a Cruel Fiction," Human Rights Watch, November 13, 2017.

    19.

    "Confidential U.N. Document Questions the Saudi Arabian Blockade that's Starving Yemen," The Intercept, November 16, 2017.

    20.

    The White House, Office of the Press Secretary, Statement from the Press Secretary on the Humanitarian Crisis in Yemen, November 24, 2017.

    21.

    "Yemenis fear Starving to Death as Saudi Siege Bites," Middle East Eye, November 30, 2017.

    22.

    See "Maritime Interdictions of Weapon Supplies to Somalia and Yemen: Deciphering a Link to Iran," Conflict Armament Research, November 2016.

    23.

    "U.S. Air Force Official: Missile Targeting Saudis Was Iranian," Associated Press, November 10, 2017.

    24.

    "Yemen: Briefing and Consultations," What's in Blue, December 4, 2017.

    25.

    "Yemen: Humanitarian Briefing in Consultations," What's in Blue, November 7, 2017.

    26.

    The White House, Office of the Press Secretary, White House Statement on Iranian-Supported Missile Attacks Against Saudi Arabia, November 08, 2017.

    27.

    "U.A.E. Denies Yemen Rebels Fired Missile at Abu Dhabi Nuclear Plant," New York Times, December 3, 2017.

    28.

    "Yemeni Rebels claim Cruise Missile Attack on UAE," Jane's Defence Weekly, December 4, 2017.

    29.

    United Nations, Promotion and protection of the rights of children: Children and armed conflict, A/72/361–S/2017/821, August 24, 2017.

    30.

    "In a Compromise, U.N. Rights Experts Will Examine Abuses in Yemen's War," New York Times, September 29, 2017

    31.

    United Nations Security Council, Security Council Issues Presidential Statement Calling on Parties in Yemen to Engage Constructively in Good-Faith Effort for Conflict Resolution, 7974th Meeting, SC/12873, June 15, 2017.

    32.

    UN OCHA, Yemen: Humanitarian Needs Overview 2018, December 2017.

    33.