DUBAI, United Arab Emirates—The U.S. Navy announced Wednesday it tested a laser weapon and destroyed a floating target in the Mideast, a system that could be used to counter bomb-laden drone boats deployed by Yemen’s Houthi rebels in the Red Sea. The test Tuesday saw the USS Portland test-fire its Laser Weapon System Demonstrator at the target in the Gulf of Aden, the body of water separating East Africa from the Arabian Peninsula. The Navy’s Mideast-based 5th Fleet described the laser as having “successfully engaged” the target in a statement. Previously, the Portland used the laser to bring down a flying drone in May 2020. The Gulf of Aden sits along the southern coast of war-torn Yemen, which has been at war since Iranian-backed Houthi rebels seized its capital, Sanaa, in 2014. A Saudi-led coalition entered the conflict in March 2015 but the stalemated conflict has dragged on for years, …