U.N. Ban on Iran Arms Transfers and Sanctions Snapback [Updated September 1, 2020] [open pdf - 590KB]
From the Overview: "A 2015 multilateral Iran nuclear agreement (Joint Comprehensive Plan of Action, JCPOA), provides for limits on Iran's nuclear program in exchange for sanctions relief. U.N. Security Council Resolution 2231 (July 17, 2015), which endorsed the JCPOA, contains Annex B that provides for a ban on the transfer of arms to or from Iran until October 18, 2020. The Trump Administration, with the support of many in Congress, has sought to extend the ban in order to try to prevent Iran from acquiring new conventional weaponry, particularly advanced combat aircraft. On August 14, the U.N. Security Council, including two key potential arms suppliers of Iran--Russia and China--voted down a U.S. draft to extend the arms transfer ban. An overwhelming majority of the Council also questions that the United States has standing for its August 20 request to implement the provision of Resolution 2231 that snaps back all U.N. sanctions on Iran, including the arms transfer ban. The dispute within the Council over the U.S snapback request has no clear path to resolution. Annex B also contains a ban, until October 18, 2023, on supplying equipment with which Iran could develop nuclear-capable ballistic missiles, and calls on Iran not to develop ballistic missiles designed to carry nuclear weapons."
CRS In Focus, IF11429
Congressional Research Service: https://crsreports.congress.gov/