UN Nuclear Watchdog Confirms Activity at Iran's 'Marivan' Site

The International Atomic Energy Agency (IAEA) has confirmed that Iran has resumed activities at the Marivan nuclear site. This confirmation follows reports by CNN, which published satellite images indicating renewed work at the facility located south of Tehran's main uranium enrichment plant. IAEA Director General Rafael Grossi stated that while the agency has not yet inspected the site's tunnel complex, remote surveillance shows new activity.

Grossi noted that there are "certain indications" of movement around the construction site but that the agency lacks concrete information about the specific activities. The IAEA's confirmation comes after it referred Iran's nuclear file to the UN Security Council due to non-compliance with its atomic program requirements. This development occurred shortly after CNN revealed satellite imagery showing intensive construction work at Marivan.

Bloomberg added that IAEA inspectors have not verified the status or location of Iran's weapons-grade enriched uranium since June 2025, a period following alleged Israeli and US attacks on Iran's extensive nuclear facilities. The IAEA's findings were shared with the UN Security Council due to Iran's non-compliance with demands related to its nuclear activities.

Prior to the IAEA's announcement, U.S. President Donald Trump addressed the situation, stating he was aware of the developments at Marivan and issued a direct threat to Tehran. "We know exactly what's going on, we may have to hit there too," Trump said, adding that U.S. Space Force capabilities allow them to observe all activities from thousands of miles away. This statement was made during a Republican Party midterm election conference in Dallas.