This report discusses the response of the non-U.S. parties to the Joint Comprehensive Plan of Action (JCPOA) to the Trump Administration's decision to cease implementing U.S. commitments under the agreement. The other parties, which include the United Kingdom, France, Germany, Russia, China, the European Union (EU) and Iran, opposed the U.S. move and have undertaken intensive negotiations to try to preserve the accord.

This report discusses the increasing international pressure on Iran to curb its nuclear program and how that pressure discourages foreign firms from investing in Iran's energy sector, hindering Iran's efforts to expand oil production. This report discusses the history and progress of the formal U.S. effort to curb energy investment in Iran, which began with the Iran Sanctions Act (ISA) in 1996. This report also discusses U.S. concerns that other nations, e.g., U.S. allies, Russia, and China, are not as strict with their economic sanctions against Iran, and how U.S. policymakers are combating this reticence with various pieces of legislation.