North Korean leader Kim Jong Un supervised missile tests that simulated nuclear counterstrikes against U.S. and South Korean forces, state media said on Friday. The tests of short-range ballistic missile systems from North Korea's eastern coastal city of Wonsan were detected by South Korea's military the day before.

North Korean leader Kim Jong Un supervised a test of a short-range ballistic missile and long-range artillery on Thursday and stressed the importance of combat readiness of the country's nuclear forces,

North Korean leader Kim Jong Un supervised tests of short-range ballistic missile systems that simulated nuclear counterstrikes against U.S. and South Korean forces.