U.S. President Donald Trump warned on Monday that he would order fresh U.S. attacks on Iran's nuclear facilities should Tehran try to restart facilities that the United States bombed last month. Trump issued the threat as he held talks with British Prime Minister Keir Starmer at his Turnberry golf resort on the western coast of Scotland.

President Trump has again threatened Iran over its nuclear program, warning of military action if uranium enrichment continues. Iran responded firmly, saying it won't yield to threats and maintains its right to enrich for peaceful purposes.

Iranian and European delegations will gather in Istanbul, Turkey, on Friday for fresh talks on Tehran's nuclear program.