UN Nuclear Watchdog Reports Iran to Security Council for First Time in Two Decades

VIENNA – The United Nations atomic watchdog’s board has reported Iran to the U.N. Security Council, marking the first such referral in 20 years. The decision stems from Iran’s failure to cooperate with an ongoing investigation into traces of uranium found by inspectors at undeclared sites.

Western nations suspect these traces could indicate a past secret nuclear weapons program that Iran maintained until 2003. Iran maintains that its nuclear program is solely for peaceful purposes and that it does not pursue nuclear weapons.

This referral to the Security Council could expose Iran to potential sanctions and asset freezes, although punitive measures are considered unlikely due to the veto power held by Iran’s allies, Russia and China, on the council.

At the International Atomic Energy Agency (IAEA) headquarters in Vienna, 23 of the 35 member board of governors voted in favor of the resolution. China, Russia, and Niger voted against it, while eight countries abstained and one did not vote due to arrears, according to diplomats familiar with the closed-door proceedings.

The resolution was introduced by the United States, Britain, France, and Germany. The board had been considering this diplomatic action since June 2025, when it officially found Iran noncompliant with its nonproliferation obligations due to a lack of cooperation.

The referral coincides with a period of heightened tensions and exchanges between the U.S. and Iran. This week saw the destruction of five Iranian oil tankers by the U.S., followed by Iranian retaliatory strikes on American targets in Jordan. These actions represent the latest in a series of back-and-forth attacks that have escalated hostilities over the past six months.

The resolution, as seen by The Associated Press, directs IAEA Director General Rafael Grossi to report the current resolution, along with previous ones, to all U.N. member states, the Security Council, and the General Assembly. It also reiterates a call for Iran to promptly address its noncompliance and take necessary steps to ensure the non-diversion of nuclear material, as determined by the IAEA.

Following Israeli and U.S. strikes on Iranian nuclear sites in June 2025, Iran has restricted IAEA inspectors’ access to affected facilities. The IAEA has also been unable to verify the status of Iran’s stockpile of near-weapons-grade uranium since the bombing.

According to IAEA figures, Iran possesses 440.9 kilograms (972 pounds) of uranium enriched to up to 60% purity. This level is a short technical step away from the 90% purity required for weapons-grade uranium. IAEA Director General Grossi has previously stated that this stockpile could potentially enable Iran to build up to 10 nuclear bombs if it chose to weaponize its program, though he clarified this does not mean Iran possesses such a weapon.