U.S. President Donald Trump said he would call on the United Nations Security Council to restore all nuclear-related sanctions on Iran, an attempt to kill off the 2015 nuclear agreement and force Tehran back to the negotiating table.

"Mark it down, Iran will never have a nuclear weapon,” Trump said at a White House news conference on Wednesday. "We paid a fortune for a failed concept, a failed policy that would have made it impossible to have peace in the Middle East.”

The move will set the Trump administration on a collision course with other world powers, including key allies, who say the U.S. doesn’t have the authority to reimpose international sanctions and that they won’t go along. Secretary of State Mike Pompeo will formally propose the "snap back” of sanctions at the U.N. on Thursday.