WASHINGTON — U.S. President Donald Trump said Wednesday that when nuclear weapons are in the hands of "crazy people," "bad things" take place, as he defended the ongoing U.S. military operation against Iran that led to the death of the Islamic Republic's Supreme Leader Ayatollah Ali Khamenei. Speaking at an energy-related event at the White House, Trump also said that everybody who wants to be an Iranian leader "ends up dead," in what appears to be a warning against the next Iranian leadership that could also pursue nuclear ambitions. Trump's remarks came as North Korea has been doubling down on its nuclear weapons program, which the Pentagon's National Defense Strategy said presents a "clear and present" danger of a nuclear attack on the American homeland. "When crazy people have nuclear weapons, bad things happen. So we are in very good shape," he said. "We will continue forward, but it's a great display of military strength," he added, referring to Operation Epic Fury, the military operation against Tehran. Trump repeated his criticism of the Iran nuclear deal that the U.S. signed un