WASHINGTON — U.S. President Donald Trump said on Friday he was not happy with Iran and wants to make a deal with Tehran but warned that "sometimes you have to" use military force. Trump, talking to reporters as he left the White House on a trip to Texas, said Iran was still unwilling to forswear nuclear weapons as demanded by the United States. He spoke a day after negotiations between U.S. envoys Steve Witkoff and Jared Kushner and Iranian officials in Geneva ended with no deal. A massive U.S. military presence is in the region waiting on Trump's order. Asked about the potential for use of force, Trump said the United States has the greatest military in the world. "I'd love not to use it but sometimes you have to," he said. Trump said more discussions on Iran would take place later in the day. He did not specify with whom, but top U.S. defense officials were at the White House on Thursday for talks. "We want no nuclear weapons by Iran and they're not saying those golden words," Trump said. The president planned events in Corpus Christi, Texas, later on Friday and then was to fly on to Pa