Iran, Russia, and China jointly informed the United Nations on Saturday that the 2015 nuclear agreement with Tehran has officially ended, declaring the termination of the UN Security Council’s consideration of Iran’s nuclear issue.

In a letter addressed to UN Secretary-General António Guterres and the Security Council, the three nations said that all provisions under Resolution 2231 — which endorsed the Joint Comprehensive Plan of Action (JCPOA) — expired on Oct. 18, 2025, marking the formal conclusion of the resolution’s 10-year term.

“The attempt by the E3 to trigger the so-called ‘snapback’ is by default legally and procedurally flawed,” the letter said, referring to the UK, France, and Germany. It added that the European parties, “having themselves ceased to perform their commitments under both the JCPOA and Resolution 2231, lack the standing to invoke its provisions.”

Tehran, Moscow, and Beijing said the conclusion of Resolution 2231 “marks the end of the Security Council’s consideration of the Iranian nuclear issue and contributes to strengthening the authority of the Council and the credibility of multilateral diplomacy.”

The letter also urged all countries to refrain from unilateral sanctions, threats, or actions that could escalate tensions, and to instead seek a “political settlement through dialogue based on mutual respect.”

Earlier, Iran’s Foreign Ministry said the resolution’s expiration had been anticipated under the original agreement’s timeline.
“All provisions, restrictions, and mechanisms related to Iran’s nuclear program are terminated as of this date,” it said in a statement.

The move came weeks after the E3 announced the activation of the JCPOA’s “snapback” mechanism on Aug. 28, accusing Tehran of breaching its commitments — a step taken despite the US’ earlier withdrawal from the deal in 2018.