President Trump said Iran is effectively undergoing “regime change,” arguing that the country’s current leadership is “very different” from the one that originally “created all those problems,” signaling a major shift in power at the top. Speaking during the swearing in ceremony of new Homeland Secretary Markwayne Mullin, Trump said, "we killed all their leadership, and then they met to choose new leaders, and we killed all of them. And now we have a new group, and we can easily do that. But let's see how they turn out."