N. Korea Condemns Washington, Seoul's War Drills, Threatens Causing "Radiation Tsunami"

North Korea confirmed this week that it tested a submarine capable of launching a nuclear attack that can "cause a large-scale radiological tsunami" through an underwater explosion.

The North Korean government blames the deterioration of regional security on joint military exercises between the United States and South Korea.

North Korea's official news agency reported that the North Korean army deployed and tested, during exercises that lasted from Tuesday to Thursday off South Hamgyong Province, a new weapons system whose mission is to "cause a large-scale radioactive tsunami", through an underwater explosion to destroy enemy ships and ports.

And the French Press Agency indicated that this submarine “can be deployed on any coast or port and towed by a surface ship.” The agency stated that the "secret weapon" was placed on Tuesday in the waters off South Hamgyong Province, and on Thursday it detonated an experimental warhead.

North Korean leader Kim Jong Un "directed" the exercise, saying it should serve as a warning to the United States and South Korea to "realize the unlimited deterrence capacity of the Democratic People's Republic of Korea," using North Korea's official name.