1 of 5 | President Donald Trump delivers remarks in the Amphitheater after laying a wreath at the Tomb of the Unknowns at Arlington National Cemetery in Arlington, Virginia, on Memorial Day. Photo by Kyle Mazza /UPI | License Photo

May 25 (UPI) -- President Donald Trump on Monday laid a wreath at the Tomb of the Unknown Soldier at Arlington National Park in Arlington, Va., to mark Memorial Day.

The annual tradition also saw Trump give an address honoring the 13 U.S. service members that have been lost during the U.S.-Israeli war in Iran during the last three months, the New York Post and USA Today reported.

"These incredible men and women gave their lives to ensure that the world's number one state sponsor of terror will never have a nuclear weapon," Trump said after laying the wreath.

"Oh, and they won't," he said. "They will never have a nuclear weapon. I'm sure you know that one."