Why it matters
Resolution 2231 endorsed the Joint Comprehensive Plan of Action (JCPOA), the landmark 2015 nuclear agreement.
It suspended nuclear-related sanctions on Iran in exchange for limits on its nuclear program.
The United States withdrew from the agreement in 2018, reimposed sanctions, and subsequently made an unsuccessful attempt to activate the “snapback” mechanism to restore UN bans.
The big picture
The allies say the expiration strengthens the authority of the Security Council and the credibility of multilateral diplomacy.
What they're saying:
In a letter to UN Secretary-General Antonio Guterres and the Security Council president, the three countries said all provisions of Resolution 2231 terminated on October 18, 2025.
The date, they wrote, “marks the end of the Security Council’s consideration of the Iranian nuclear issue.”
Go deeper:
European powers (UK, France, Germany) also attempted to invoke the snapback mechanism earlier this year, leading to renewed sanctions.
Iran, Russia, and China argue the Europeans lack legal standing, citing their own failure to uphold JCPOA commitments.
Hossein Amiri - ahmad shirzadian
