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It came after the three countries’ joint letter to the United Nations Secretary-General and the President of the Security Council declaring the termination of Resolution 2231 on October 18, he added.

In the letter to the head of the IAEA, he noted, the three countries reaffirmed the “illegal” measure of the European trio (Great Britain, France and Germany) to invoke the so-called rollback mechanism and the expiration of all provisions of Resolution 2231 on October 18, 2025.

“But there is another key point that relates to the end of the IAEA Director General’s mandate to report on verification and monitoring under Resolution 2231 and the implementation of the JCPOA,” Gharibabadi emphasized, referring to the 2015 nuclear deal, formally known as the Joint Comprehensive Plan of Action.

According to the Iranian diplomat, the letter stated that at the IAEA, “the implementation of the JCPOA, as well as verification and monitoring in the Islamic Republic of Iran in light of UNSCR 2231, were promulgated by the resolution of the Board of Governors of December 15, 2015 (GOV/2015/72).”

It stated: “Operational paragraph 14 of this Resolution unequivocally states that the Board ‘decides to continue to pursue the matter until ten years after the JCPOA Adoption Day or until the date on which the Director General reports that the Agency has reached a broader conclusion for Iran, whichever occurs first.’

“Accordingly, as of October 18, 2025, the relevant agenda item has been automatically removed from the agenda of the Board of Governors and no further action is required in this regard,” Gharibabadi noted.

Iran has rejected the legality of the E3 triggering the reactivation of UN sanctions, calling the mechanism “null and void” and a “fabricated” term.

On October 18, Tehran declared an end to all UN restrictions on its nuclear program following the expiration of Security Council Resolution 2231.

Iran has faced sustained economic pressure in recent years, particularly after the United States unilaterally withdrew from the JCPOA in 2018 and reimposed sweeping sanctions under the so-called “maximum pressure” policy.

Despite these pressures, Iran has sought to adapt through increased domestic production, non-dollar trade mechanisms, and expanding economic ties with partners in Asia and neighboring states.