The P4+1 and Iran Nuclear Deal Alert

Flags of the Iran Deal Negotiating Partners

Periodic alerts providing news and analysis on the negotiations and implementation of the Joint Comprehensive Plan of Action between the P5+1 (China, Germany, France, Russia, the United Kingdom, and the United States) and Iran over the latter's nuclear program. To receive these by email, subscribe to our regular updates list.


  • March 14, 2024

    The IAEA reports a small decrease in Iran’s 60 percent uranium stockpile, but no progress on the safeguards investigation. In the meantime, the annual U.S. Worldwide Threat Assessment, released after a Congressional hearing March 11, assesses that Iran is not engaged in weaponization activities.

  • February 16, 2024

    There are growing concerns about Iran's continued enrichment and new nuclear facilities as well as possible missile sales to Russia.

  • February 16, 2024

    International Atomic Energy Agency Director General Rafael Mariano Grossi called for diplomacy with Tehran after the agency reported that Iran increased its production of uranium enriched to near weapons grade. Grossi also criticized Iran for restricting cooperation with the agency.

  • September 20, 2023

    The United States and Iran took steps to de-escalate tensions over the past few weeks, but it is unclear if the progress will lead to a resumption of talks over Iran’s advancing nuclear program. Meanwhile, the E3 will keep in place certain sanctions on Iran and the IAEA states current safeguards issues remain unresolved.

  • June 14, 2023

    The space for negotiations between Washington and Tehran over Iran's advancing nuclear program may be opening up after U.S. and Iranian officials expressed support for reaching an agreement and Iran took limited steps to increase monitoring of its nuclear program.