President Donald Trump, seen here at the White House on Tuesday, threatened Iran on Sunday, warning the Middle Eastern country that time was running out to make an agreement to end the war. Photo by Bonnie Cash/UPI | License Photo

May 18 (UPI) -- President Donald Trump has renewed his threats of mass violence against Iran, warning Tehran that "the Clock is Ticking" as the stalemate in talks to end the war shows no signs of ending.

In a statement on his Truth Social platform on Sunday night, Trump wrote: "For Iran, the Clock is Ticking, and they better get moving, FAST, or there won't be anything left of them."

"TIME IS OF THE ESSENCE!"

The two-sentence statement echoed the scale of violence he threatened April 7, shortly before the cease-fire was announced, when he warned Iran to make an agreement to end the war or "A whole civilization will die tonight, never to be brought back again."