President Donald Trump said the US targeted three nuclear sites in Iran late on Saturday, as Washington directly joined Israel's days-long assault on the Islamic Republic.
In a televised address, Trump said the attacks were a "spectacular military success" and had targeted the Fordow, Natanz and the Isfahan sites in an effort to disable the Islamic Republic's nuclear enrichment capability.
"I can report to the world that the strikes were a spectacular military success. Iran's key nuclear enrichment facilities have been completely and totally obliterated," Trump said, adding that Tehran needed to "make peace" as he threatened more intense attacks if it did not.
"There will be either peace or there will be tragedy for Iran far greater than we have witnessed over the last eight days," he said.
"Remember, there are many targets left. Tonight's was the most difficult of them all, by far, and perhaps the most lethal.