The U.S. and Iran launched new attacks in the Gulf as they wrestled for control over the Strait of Hormuz.

Iran fired missiles and drones at vessels in the Strait of Hormuz on Monday, and the U.S. sunk seven small Iranian boats in the waterway, U.S. officials said.

Iran on Monday reportedly targeted a U.S. warship trying to enter the Strait of Hormuz, forcing it to turn back, a claim quickly disputed by the U.S....