BUSAN, South Korea, March 23 (Reuters) - South Korean and U.S. troops launched their largest amphibious landing drills in years involving a U.S. amphibious assault ship, officials said on Thursday, a day after North Korea tested four long-range cruise missiles.
About 12,000 sailors and marines from the two countries will take part, as will 30 warships, 70 aircraft and 50 amphibious assault vehicles, the South Korean military said.
Hours before the ship docked, North Korea fired four cruise missiles off its east coast, South Korea said, in apparent protest of ongoing drills by the U.S. and South Korea.
The ship's welldeck, which can be flooded to provide direct access to the sea, allows it to launch and recover landing craft and other amphibious vehicles, the U.S. military said.
South Korea and the U.S. say the exercises are purely defensive.