Hegseth: U.S. Sub Sank Iranian Ship in International Waters; Iran Conflict Brings Strait of Hormuz Traffic to Virtual Halt; Dubai Caught in Crossfire of War with Iran; Iranian Officials Working to Select New Supreme Leader; European Gas Prices Rise Amid Persian Gulf Disruption; Iranian Drones May Pose Challenge to U.S. Air Defenses; U.S. Senate Voting on Whether to Rein in Trump's War Powers. Aired 4p-5p ET