Watch: How successful have the US strikes on Iran been?
The BBC's security analyst Gordon Corera examines how much damage is likely to have been caused to Iran's nuclear sites.
The US has bombed three sites in Iran and President Trump said the strikes took "the 'bomb' right out of their hands".
However, Iran's foreign minister has said his country's nuclear knowledge "can't be destroyed by bombing".
Video produced by Sofia Ferreira Santos