United States President Donald Trump on Wednesday said Iran's nuclear programme has been "set back decades", a day after he claimed to have brokered a truce between the Shiite state and Israel, Times of India reported.

"They're not going to be building bombs for a long time," said Trump, insisting that US strikes caused 'total obliteration' at Iran nuclear sites.

He also said that the ceasefire between the Jewish nation and the Khamenei-led state was "going very well".