POTUSRECORDThe office changes.Barack Obama / Obama / Peace & conflict
2015–2016; U.S. withdrawal in 2018
Implementation verified (2016) · U.S. withdrawal (2018)
Historical case snapshot · reviewed
Published · Visual edition October 6, 2026
Compare this casePUBLICATION-MADE RECORD DIAGRAM
Visual guide: Iran nuclear agreement implementation. Congressional Research Service (CRS), Library of Congress and the linked official records supply the evidence below. This diagram is not a photograph, chronology of legal effect or measure of success.
A multilateral agreement and verification process involving Iran, six negotiating powers, the IAEA, the U.N. Security Council, and Congress. Historically implemented; United States ceased participation in 2018. No claim is made that the 2016 restrictions remain implemented in October 2026; later Iranian compliance and 2025–2026 developments are not verified by this 2018 source.
Constrain Iran’s nuclear program and monitor compliance in exchange for specified sanctions relief.
Iran and the United States, United Kingdom, France, Russia, China, and Germany finalized the JCPOA on July 14, 2015. Adoption Day was October 18, 2015.
Implementation Day on January 16, 2016 followed completion of Iran’s required nuclear steps, with sanctions relief beginning. The July 2018 CRS report records compliance findings by officials in both the Obama and Trump administrations. This is a source-vintage implementation result, not proof of permanent prevention of a nuclear weapon.
The exchange included broad sanctions relief and time-limited restrictions on enrichment activities. The agreement did not restrict Iran’s ballistic-missile development. President Trump announced U.S. withdrawal on May 8, 2018 and reimposition of suspended sanctions; other participants initially sought to keep implementing it.
OFFICIAL EVIDENCE / FULL SOURCE REGISTER
Source dates identify the original publication, document or stated vintage. The review date identifies when this edition examined that evidence.