Trump says Iran’s nuclear threat ended in one night, but key questions remain

In a Truth Social post on 1 October 2026, President Donald Trump said he had repeatedly predicted it would take four to six weeks to eliminate Iran’s nuclear threat, but had done it “in one night”. He said the remaining time was needed only to keep it that way. The post did not identify the night, an operation or what would count as eliminating the threat. [1]

Trump did give a four-to-six-week estimate on 26 March, but he described it as the time needed to achieve the mission of Operation Epic Fury, not solely a nuclear objective. On 2 March, he had projected four to five weeks for a campaign whose stated aims included destroying Iran’s missiles and navy, preventing it from obtaining a nuclear weapon and ending its support for armed groups abroad. He said then that the operation could last longer. [7] [4]

There is evidence of serious damage. In prepared remarks published on 18 March, US intelligence director Tulsi Gabbard assessed that an earlier operation, Midnight Hammer, had obliterated Iran’s enrichment programme and that Iran had not tried to rebuild that capability since. She said US intelligence was continuing to watch for any decision to authorise a nuclear weapons programme. Trump had himself claimed on 2 March that Midnight Hammer had destroyed Iran’s nuclear programme, while accusing Iran of continuing to pursue nuclear weapons. [5] [4]

Destroyed enrichment capacity, however, is narrower than an end to every nuclear risk. The International Atomic Energy Agency estimated that Iran held 440.9kg of uranium enriched to up to 60% as of 13 June 2025. By September 2026, it could not determine the current size, composition or whereabouts of Iran’s enriched-uranium stockpile, or whether enrichment had stopped, because it lacked the necessary information and access. Its director general called the gap a serious proliferation concern. That uncertainty is not evidence that Iran has a weapon or has resumed enrichment. [2] [3]