Kim Jong Un orders nuclear attack readiness drills in North Korea.

North Korea conducted its fifth missile demonstration this month, simulating a nuclear attack on South Korea with a ballistic missile launch over the weekend. The missile, which flew about 500 miles, was tipped with a mock nuclear warhead and detonated as intended 800 yards above water at a spot that simulated an unspecified “major enemy target.” The launch was the final step of a two-day drill that also involved nuclear command and control exercises and training military units to switch more quickly into nuclear counterattack posture, properly handle nuclear weapons systems and execute attack plans. The North’s leader Kim Jong Un instructed his military to hold more drills to sharpen the war readiness of his nuclear forces in the face of “aggression” by his enemies.