 
 
 
 INSIGHTi 
 
Iran’s Transfer of Weaponry to Russia for Use 
in Ukraine 
November 4, 2022 
Since August 2022, according to the Biden Administration, Iran has transferred armed unmanned aerial 
vehicles (UAVs, or drones) to Russia, which has used them against a range of targets in Ukraine. U.S. 
officials express
 concern that Russia may seek to procure
 missiles from Iran. These transfers (and 
potential transfers of ballistic missiles) have implications for the trajectory of the conflict in Ukraine as 
well as for U.S. efforts to support Ukraine’s defense against Russia’s invasion. Other policy 
considerations for the Administration and for Congress include sanctions on entities involved in the arms 
transfers and potential action at the United Nations (U.N.).  
Background 
In July 2022, National Security Adviser Jake Sullivan
 stated, “our information indicates that the Iranian 
government is preparing to provide Russia with up to several hundred UAVs.” In late August, the 
Washington Post reported that Russia had picked up “scores” of Iranian drones. Ukrainian officials 
estimated in October 2022 that Russia had ordered arou
nd 2,000 UAVs from Iran, of which 
“hundreds” 
had been delivered; the U.S. Department of Defense
 assesses that “Iranians have been on the ground in 
Ukraine to assist Russia with the drone operations there.
” Russian and
 Iranian officials deny the use of 
Iranian UAVs in Ukraine.    
These
 drones (the Shahed-131 and 136) have a range of 900 and 1,500 kilometers, respectively. They 
have a slow speed, making them vulnerable to man-portable air defense and even small arms. Ukraine 
appears to have been
 successful at downing a 
“significant percentage of the Iranian drones,” but some 
continue to evade defenses. It is unclear how many of Ukraine’s medium- and long-range air defense 
systems remain operational. 
Congressional Research Service 
https://crsreports.congress.gov 
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CRS INSIGHT 
Prepared for Members and  
 Committees of Congress 
 
  
 

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Figure 1. Shahed-136 Drone in Kyiv 
 
Source: Getty Images, via 
New York Times, October 17, 2022
 
October
 2022 media reports
 suggest that Iran is considering transferring short-range ballistic missiles 
(SRBMs) to Russia. The
 Fateh-110 and Zolfaghar SRBMs have a warhead of approximately
 500 
kilograms, in contrast to the 40-kilogram warhead of the drones. While it is difficult to predict the impact 
of the use of Iranian drones and potential SRBMs on the ground conflict, the presence of these weapons 
highlights Ukraine’s lack of adequate air defense systems. Ukrainian President Volodymyr Zelensky has 
called for more air defense assistance. The United States and European allies have
 committed to 
delivering advanced
 air defense systems, but production bottlenecks complicate more immediate 
deliveries. In addition, the systems are not designed to counter ballistic missiles, and cost imbalances raise 
questions about long-term viability. For more, see CRS In Focus IF12040,
 U.S. Security Assistance to 
Ukraine.  
Russian and Iranian Motivations 
Russia has responded to battlefield setbacks by conducting long-range missile strikes against Ukrainian 
cities and infrastructure targets. Some observers say Russia is
 likely running low on its stockpile of long-
range precision missiles, and press articles claim that U.S. and other western officials
 question Russia’s 
ability to replace stocks due to Wester
n sanctions and export controls. In contrast to cruise missiles, which 
cost several million dollars each, Iranian drones cost far less (estimates range from $20,000 to $50,000). 
Their relatively low cost and ease of replacement provide Russia with the capability to use swarms of 
drones to attack targets and overwhelm air defenses. Iranian drones also cost less tha
n Ukraine’s air 
defense missiles. 
  
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From Iran’s perspective, the UAV transfers appear to represent a strengthening of its ties with Russia, a 
relationship
 reinforced by their economic isolation from and opposition to the United States. Additionally, 
Commented [AA1]:  
the deployment of Iranian UAVs in Ukraine may be, in the words of one
 observer, “an important 
propaganda opportunity” for Iran to demonstrate its drone capabilities for “potential future clients.” Iran 
reportedly has transferred UAVs to proxies in Iraq and Yemen (which have used them against
 U.S. forces 
in Syria and targets i
n Saudi Arabia and the United Arab Emirates, respectively), as well as to
 states such 
as Ethiopia, Venezuela, and Sudan. The U.S. government
 attributes the 2019 UAV attack on Saudi oil 
infrastructure to Iran’s Islamic Revolutionary Guards Corps Aerospace Force.  
Issues for Congress 
U.S. Sanctions 
On September 8, 2022, the Administration designated for
 sanctions four entities and one individual 
(pursuant to Executive Orders 13382 and 14024) for their involvement in the “research, development, 
production, and procurement” of Iranian UAVs and their shipment to Russia. These follow previous 
designations (announced October 29, 2021, pursuant to Executive Orders 13224 and 13382) of 
individuals and entities that “provided critical support” to Iran’s UAV programs. 
Relatedly, Congress is considering legislation that would authorize sanctions under Section 107 of the 
Countering America’s Adversaries Through Sanctions Act 
(P.L. 115-44) on individuals who support 
Iran’s UAV activities. That legislation, the Stop Iranian Drones Act
 (H.R. 6089), was passed by the House 
i
n April 2022 and reported out by the
 Senate Foreign Relations Committee in June. Some Senators have 
proposed incorporating
 H.R. 6089 into Senate consideration of a FY2023 National Defense Authorization 
Act (as amendment
 SA 5826 to SA 5499), though procedural and other issues
 reportedly may complicate 
its inclusion. 
U.N. Action 
Adopted in July 2015 to endorse the Joint Comprehensive Plan of Action (JCPOA), Annex B of
 U.N. 
Security Council Resolution (UNSCR) 2231 restricts until October 2023 the import to or export from Iran 
of certain arms, including UAVs and ballistic missile systems. U.S. officials have
 said Iran’s supply of 
UAVs to Russia violates UNSCR 2231. The United States, along wit
h Ukraine and other
 countries, has requested the Secretary-General investigate and report on the alleged violation.  
Separately,
 some commentators have called for the United States to work with partners to reimpose U.N. 
sanctions on Iran through the 
“snapback” mechanism of UNSCR 2231, though that mechanism is related 
only to “significant non-performance of commitments under the JCPOA,” not UNSCR 2231 
commitments. In any case, some
 observers suggest the practical impact of reimposing U.N. sanctions 
could be minimal, given the extensive U.S. secondary sanctions already in place. Congress may consider 
directing the Administration to provide reports or briefings on its views of and strategy related to UNSCR 
2231. 
  
Congressional Research Service 
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Author Information 
 Andrew S. Bowen 
  Clayton Thomas 
Analyst in Russian and European Affairs 
Specialist in Middle Eastern Affairs 
 
 
Carla E. Humud 
   
Analyst in Middle Eastern Affairs  
 
 
 
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