The Pentagon has ordered a Marine expeditionary unit with about 2,200 Marines and three Navy amphibious warships from Japan toward the Middle East, a significant new U.S. force movement amid tensions tied to the war with Iran. U.S. officials told ABC News that the deployment centers on the 31st Marine Expeditionary Unit, a forward-deployed force based in Japan that normally operates in the Indo-Pacific. At the center of the movement is the Tripoli Amphibious Ready Group, led by USS Tripoli, an America-class amphibious assault ship. USNI News reported that the Tripoli had been operating in the Philippine Sea earlier this...