The UN’s International Atomic Energy Agency says it is unable to verify whether Iran has halted all uranium enrichment activities.

VIENNA (AP) — Iran did not allow the U.N. nuclear agency access to its nuclear facilities that Iran and the United States bombed during the 12-day war in June, according to a confidential report from the agency distributed to member states and seen by The Associated Press on Friday.

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The IAEA report stressed that it “cannot verify whether Iran has suspended all enrichment-related activities” or “the size of Iran’s uranium stockpile in the damaged nuclear facilities.”

Iran has four declared enrichment facilities, but the report warned that because they are not accessible, the IAEA “cannot provide any information on the current size, composition, or whereabouts of Iran’s enriched uranium stockpile.”

The report stressed that “the loss of continuity of knowledge…needs to be addressed with the utmost urgency.”

Iran has long insisted that its program is peaceful, but the International Atomic Energy Agency and Western countries say Tehran had a regulated nuclear weapons program until 2003. The United States is seeking an agreement to limit Iran’s nuclear program and ensure it does not develop nuclear weapons.

Highly enriched material should be checked regularly

The IAEA said Iran told the agency in a letter dated February 2 that normal safeguards were “legally indefensible and materially impractical” as a result of threats and “acts of aggression.”

The confidential report also said Friday that Iran has given IAEA inspectors access “to each of the undamaged nuclear facilities at least once” since June 2025, with the exception of the Karun power plant under construction.

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Iran is legally obligated to cooperate with the International Atomic Energy Agency under the Treaty on the Non-Proliferation of Nuclear Weapons, but it suspended all forms of cooperation after the war with Israel.

According to the International Atomic Energy Agency, Iran maintains a stockpile of 440.9 kilograms (972 pounds) of uranium enriched to 60% purity — a short technical step away from weapons-grade levels of 90%.

This stockpile could allow Iran to build up to 10 nuclear bombs, if it decides to weaponize its program, International Atomic Energy Agency Director General Rafael Grossi warned in a recent interview with the Associated Press. He added that this does not mean that Iran possesses such a weapon.

Such highly enriched nuclear material should normally be verified every month, according to IAEA guidelines.

The International Atomic Energy Agency monitors activity around nuclear sites

In the absence of direct access to nuclear sites, the IAEA resorted to commercially available satellite images.

The report said that monitoring of the Isfahan facility, located about 350 kilometers southeast of Tehran, showed “regular vehicle activity” around the entrance to the tunnel complex used to store enriched materials.

Read more: IAEA head says Iran is not actively enriching uranium but movement has been detected near the stockpile

The city of Isfahan was attacked by both Israel and the United States in June.

The IAEA said it had also observed activity at the enrichment sites at Natanz and Fordow, but added that “without access to these facilities, the Agency cannot confirm the nature and purpose of the activities.”

The International Atomic Energy Agency joined the Geneva talks

The International Atomic Energy Agency said on Friday that Grossi attended negotiations between the United States and Iran on February 17-26 in Geneva, where he “provided advice” on verifying Iran’s nuclear program. The report stated that these negotiations are “ongoing.”

Thursday’s talks, the third round this year brokered by Oman, ended without an agreement, leaving the risk of another Middle East war on the table as the United States mobilized a huge fleet of planes and warships in the region.

An Omani official said that lower-level technical talks will continue next week in Vienna, the headquarters of the International Atomic Energy Agency. The agency is likely to be crucial in any deal.

Iran says it is not seeking weapons and has so far resisted demands to stop uranium enrichment on its soil or hand over its stock of highly enriched uranium.

Similar talks that took place last year between the United States and Iran regarding the Iranian nuclear program collapsed after the war began in June. Before that, Iran was enriching uranium to a purity of up to 60%.