LONDON -- North Korean leader Kim Jong Un oversaw the test-firing of two newly developed types of missiles, state media reported, launches that came as the United States and South Korea held their annual military drills to the south.

North Korea has accused South Korea of conducting a "deliberate provocation aimed at military conflict" after Seoul confirmed its soldiers fired ten warning shots toward North Korean troops it claimed had crossed the demarcation line between the two countries on Tuesday.

North Korean leader Kim Jong Un has overseen the test-firing of two new air defence missiles, state media said Sunday, after Pyongyang accused Seoul of fomenting tensions on the border.Pyongyang state media quoted Army Lieutenant General Ko Jong Chol as saying the incident was a "premeditated and deliberate provocation".