Thursday, August 25, 2016
 

North Korea test fired a ballistic missile from a submarine yesterday, which landed in the Sea of Japan after traveling approximately 500 km (about 300 miles), according to officials of South Korea and the US.

The missile was fired from a submarine off North Korea's east coast near Sinpo, officials said, and was reportedly North Korea's first successful launch after missiles only traveled a small distance in previous tests. The South Korean military accused the North Korean government of using the test to increase military tension during the annual South Korean–US joint military drills, which involve 80,000 South Korean and US troops. North Korea has threatened a preemptive nuclear strike saying the drills were practice for an invasion.
This came on the same day as a meeting between the leaders of China, Japan, and South Korea where, according to Foreign Minister Fumio Kishida of Japan, they "urge[d] North Korea to exercise self-restraint regarding its provocative action, and to observe the UN Security Council's resolutions". Japanese Prime Minister Shinzo Abe called the test's intrusion into Japan's air defense identification zone "a grave threat to our country’s security."


Sources
 North Korea submarine fires ballistic missile — BBC News Online, August 24, 2016
Choe Sang Hun. North Korea Test-Fires Missile From Submarine — New York Times, August 24, 2016