South Korea, Japan, and the United States on Sunday conducted a joint air drill involving a heavy bomber, Seoul's military said, in response to North Korea's latest long-range missile test.

The exercise took place three days after Pyongyang launched one of its most powerful and advanced solid-fueled intercontinental ballistic missiles (ICBM), which experts say could reach targets in the mainland U.S..

The drill mobilized the U.S.' B-1B bomber, South Korea's F-15K and KF-16 fighter jets, and Japan's F-2 jets, Seoul's military said.