The U.S. struck Fordow, roughly 60 miles south of Tehran, as well as the Natanz complex to the southeast and Isfahan, southwest of Natanz, Trump said. The president hailed the attacks as a "spectacular military success," adding: "Iran's key nuclear enrichment facilities have been completely and totally obliterated."

The main risk inside the storage facility is the chemical toxicity of uranium hexafluoride gas and fluoride compounds generated in contact with water. The radiological risk from enriched uranium at Natanz is likely to be much smaller than the chemical toxicity from the fluorine.

The US struck a facility in the mountain ridge in Isfahan, where a stockpile of enriched uranium and facilities related to the nuclear program were likely held, a source familiar with the details of the US operation told The Jerusalem Post.