Iran retaliated against the U.S. on Monday, launching missiles at a U.S. base in Qatar, according to a U.S. defense official and a statement from the Qatar foreign ministry. The missiles targeted Al Udeid Air Base outside Doha and were intercepted by air defenses before they could strike the base, the Qatari government said. "At this time, there are no reports of U.S. casualties" from the barrage of short-range and medium-range ballistic missiles fired by Iran, the U.S. defense official said.