North Korea tests launching cruise missiles from a submarine. Cruise missiles have jet propulsion and fly at a lower altitude than more advanced ballistic missiles.
Cruise missile test comes as tension increases on the Korean Peninsula, prompting North Korea and its southern neighbor to reinforce their forces on the border. The North Korean leader has repeatedly stressed his determination to develop his country's nuclear capabilities, and threatened to respond in kind to any nuclear strike. The South Korean army said that it had detected the launch of cruise missiles near the waters surrounding the Sinpo area in North Korea.