North Korea fires 4 short-range ballistic missiles off its west coast

North Korea fired four short-range ballistic missiles off its west coast on Saturday, the South Korean military said, following a series of missile launches in recent days in protest against an extended U.S.-South Korea joint air exercise.South Korea's Joint Chiefs of Staff said it detected the launches toward the Yellow Sea from Tongrim County in North Pyongan Province between around 11:32 a.m. and 11:59 a.m.The missiles flew about 130 kilometers at an altitude of about 20 km with a top speed of Mach 5, the JCS said.The series of missile launches by Pyongyang since the United States and So…READ FULL ARTICLE