IAEA Confirms No Access at Any Iranian Enrichment Facility Since Feb 28 — Enriched Uranium Stockpile Believed at Isfahan Underground Complex

IAEA Director General Rafael Grossi confirmed on or around May 6, 2026 — Day 68 — that the agency had maintained no access to any of Iran's four declared nuclear enrichment facilities since the war began on February 28. Grossi confirmed that Iran's enriched uranium stockpile — believed to include approximately 440 lbs (200 kg) enriched to up to 60% purity — was likely still stored at the Isfahan underground tunnel complex, based on where it was last verified before the conflict began. Iran had cited 'conditions resulting from acts of aggression' as making 'normal implementation of safeguards legally untenable,' effectively blocking all IAEA inspectors. Iran's UN mission stated there was 'no restriction on the level of uranium enrichment under IAEA supervision' in principle — but the physical inspection regime had completely collapsed at all four facilities. A fourth enrichment facility under construction at Isfahan before the war had an entirely unknown status; IAEA inspectors did not know its precise location or current condition. The cessation of IAEA access during the 68-day conflict represented one of the most severe collapses of nuclear safeguards monitoring in the IAEA's history. Foreign Policy noted the situation was 'the nightmare scenario that proliferation experts had warned about for years.' The IAEA's reporting gap was a critical obstacle to any nuclear element being included in the one-page memo that Pakistan was negotiating — verification mechanisms would have to be rebuilt from scratch.