The Washington Post reports North Korea fired two short-range missiles into the sea between the Korean peninsula and Japan on Monday morning, registering its displeasure with the start of annual military exercises between South Korea and the United States. After offering to suspend nuclear tests if the United States and South Korea canceled the drills, Pyongyang has reverted saber rattling, threatening “merciless strikes” just hours before the missiles were launched. North Korea fired the two missiles, thought to be Scud-C or Scud-D types, from the western coastal city of Nampo, about 300 miles over the peninsula and into the sea off its east coast, South Korea’s Joint Chiefs of Staff said Monday. The launches took place at 6:32 a.m. and 6:41 a.m., it said in a statement. They were launched as South Korea and the United States began military exercises to practice to coordinate their response to the North Korean threat: The two-week-long computer-simulated Key Resolve drill, and the Foal Eagle field exercises, which will continue through April 24.