President Donald Trump on Thursday said that "the war in Iran is going along swimmingly."

"It should be ending pretty soon," Trump said at an event in Las Vegas, echoing similarly rosy predictions about the end of the war that he has made since the United States and Israel launched attacks on Iran in late February.

"It was perfect. It's perfect. It was the power we have," the president said. "We had the most powerful military anywhere in the world."

The president's appearance was to promote his "no tax on tips" policy, which eliminated the federal income tax on tip-based wages for many workers.

Hours earlier, Trump said that Israel and Lebanon had agreed to a 10-day ceasefire. Iran has complained about Israel's continued attacks on Lebanon during its own 10-day ceasefire with the United States.

Trump earlier Thursday said that a second round of face-to-face negotiations between Americans and Iranian officials could take place "probably, maybe, next weekend."