SEOUL, South Korea — A ballistic missile fired from a North Korean submarine on Wednesday flew about 310 miles, the longest distance achieved by the North for such a weapon, Seoul officials said, putting all of South Korea, and possibly parts of Japan, within its striking distance.
North Korea already has a variety of land-based missiles that can hit South Korea and Japan, including U.S. military bases in those countries. But its development of reliable submarine-launched missiles would add weapons that are harder to detect before liftoff.
South Korea's military condemned the launch as an "armed protest" by North Korea against the start of annual South Korean-U.S. military drills but acknowledged it was an improvement over previous tests of similar missiles.
"North Korea's nuclear and missile threats are not imaginary threats any longer, but they're now becoming real threats," South Korean President Park Geun-hye said of the launch. "Those threats are coming closer each moment."
The missile, fired from a submarine off the eastern North Korean coastal town of Sinpo, reached into Japan's air defense identification zone, according to Seoul and Tokyo officials. The U.S. Strategic Command said it tracked the launch of the presumed KN-11 missile into the Sea of Japan.
Its 310-mile flight puts all of South Korea within its range if it is fired near the two countries' border.
Missiles of such capability could also potentially strike parts of Japan, including U.S. military bases on the island of Okinawa, considering the operational range of North Korea's Sinpo-class submarines, which can move about 620 miles underwater at a time, said analyst Kim Dong-yub at Seoul's Institute for Far Eastern Studies.
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