Trump says Iran’s nuclear program was obliterated, but questions remain about Iran’s capability and the location of hundreds of pounds of highly-enriched uranium.

It was an unprecedented attack years in the making, with some last-minute misdirection meant to give the operation a powerful element of surprise.

U.S. forces struck three Iranian nuclear sites on Sunday, and reactions from around the world ranged from Israel lauding President Donald Trump's decision, to the U.N. calling for de-escalation and Iran and some other nations condemning the attacks.

Iran could be poised to withdraw from an international accord that seeks to prevent the spread of nuclear weapons. This follows tensions with the United Nations’ atomic watchdog, compounded by the attacks on the Islamic Republic’s nuclear program by Israel and the US.

UN nuclear watchdog chief Rafael Grossi has given an update on the status of Iran’s nuclear sites following US attacks.