Iran Hasn’t Rebuilt Nuclear Sites, According To Nuclear Watchdog

International nuclear inspectors have detected no attempts by Iran to rebuild nuclear facilities damaged by American and Israeli airstrikes.

Monitoring efforts have uncovered no reconstruction activity at Iranian nuclear facilities damaged in military operations during 2025 and 2026, the head of the International Atomic Energy Agency (IAEA), Director General Rafael Grossi, told the United Nations (UN) on Tuesday. However, inspectors remain unable to verify the whereabouts of hundreds of kilograms of highly enriched uranium, raising questions about Tehran’s remaining nuclear capabilities.

“Since June 2025, we have not identified any activity to repair or reconstruct,” Grossi told the Security Council, according to the UN transcript.

This assessment is in line with previous statements from the Pentagon and other U.S. officials.

Iran’s nuclear facilities suffered extensive damage during American strikes in June 2025, including attacks on Fordow, Natanz and Isfahan, according to the Pentagon.

Former Director of National Intelligence (DNI) Tulsi Gabbard previously declared Iran’s nuclear enrichment program had been “obliterated” by American strikes in June 2025, according to her March 18 congressional testimony. Gabbard also said Tehran had made no attempts to restore its enrichment capabilities, with entrances to bombed underground facilities buried and sealed with cement.

Gabbard reaffirmed those findings when Democratic Georgia Sen. Jon Ossoff questioned whether American intelligence agencies believed Iran’s enrichment program had been destroyed and whether Tehran had attempted to rebuild it. She answered “Yes” to both assessments, according to the Senate hearing.

However, Gabbard declined to say whether American intelligence agencies believed Iran posed an imminent nuclear threat before the U.S. launched its February offensive. She argued that President Donald Trump alone could determine whether a threat was imminent, while acknowledging that Iran retained the intention to rebuild its enrichment capabilities, according to the Senate hearing.

The U.S. launched another major military campaign against Iran on Feb. 28, 2026, targeting its missile capabilities, naval forces and military infrastructure, according to the Pentagon. President Donald Trump’s administration identified preventing Iran from obtaining nuclear weapons as a central objective.