For decades, Iran has been subject to rigorous inspections of its core nuclear sites. Inspectors would visit its enrichment sites and check its stockpile of enriched uranium every couple of days, ensuring that Iran wasn’t diverting fissile material for a nuclear weapon.

Pentagon reports Iran's nuclear facilities were "completely obliterated" in June strikes, offering a more optimistic assessment than earlier estimates while Iran acknowledges damage.

Israel and the U.S. struck Iranian nuclear facilities, resulting in what Trump has described as "total obliteration" of three sites: Fordow, Natanz, and Isfahan. Israel said Iran had nuclear ambitions that posed an existential threat to its existence.