The remarks underscore tensions between the U.S. and Iran amid ongoing nuclear talks with Trump saying he hopes to achieve an agreement that would prevent Iran from acquiring nuclear weapons. If talks fail, he has threatened possible military action. Iran says it seeks only a peaceful nuclear program, but will defend itself against any attack.

Energy Secretary Chris Wright told CBS News that he anticipates a deal with Iran by the end of the year, calling it a "very active dialogue in all of my travels in the Middle East."