In a strong statement to Iran, President Trump Warns Iran to ‘Move Quickly’ on Nuclear Deal or Face Fallout Amid Intensifying US-Iran Talks. As diplomatic efforts to reach a new US-Iran nuclear deal intensify, former President Donald Trump issued a stark warning to Tehran, urging the Iranian leadership to act quickly or risk severe consequences. Speaking to reporters aboard Air Force One after a stop in the United Arab Emirates, Trump made it clear that the clock is ticking.