Iran 's military fired four one-way drones at a commercial ship in the Strait of Hormuz on Wednesday, a senior U.S. official said. The U.S. military shot down the drones and attacked another Iranian drone-launching unit on the ground before, the official added. Why it matters: This is the second such skirmish in 48 hours. It happened as the U.S. and Iran are negotiating a deal to end the war. Driving the news: U.S. Central Command said in a statement that its forces "shot down four Iranian one-way attack drones that posed a threat around the Strait of Hormuz." The statement added: "U.S. forces also struck an Iranian ground control station in Bandar Abbas that was about to launch a fifth drone.…