Last week, Israel struck four buildings at the Isfahan nuclear site, among them a uranium conversion facility. The IAEA said there has been no sign of increased radiation at Isfahan, which is roughly 350 kilometers (215 miles) southeast of Tehran.

However, the British newspaper said President Donald Trump was not considering using a tactical nuclear weapon on Fordow and the possibility was not presented by Defense Secretary Pete Hegseth and the chairman of the Joint Chiefs of Staff, General Dan Caine, in meetings in the White House Situation Room.

Russia is telling the United States not to strike Iran because it would radically destabilise the Middle East, Russian Deputy Foreign Minister Sergei Ryabkov said on Wednesday, and Moscow said Israeli strikes risked triggering a nuclear catastrophe.