Kim Jong Un urges nuclear attack preparedness against US and South Korea.

North Korean leader Kim Jong Un called for the country to stand ready to conduct nuclear attacks at any time to deter war, accusing the U.S. and South Korea of expanding joint military drills involving American nuclear assets. In the exercises, a ballistic missile equipped with a mock nuclear warhead flew 800 km before hitting a target at the altitude of 800 m under the scenario of a tactical nuclear attack. South Korea and Japan reported a launch of a North Korean short-range ballistic missile off the east coast on Sunday, the latest in a series of missile tests in recent weeks.