North Korea fired two suspected ballistic missiles into the sea Monday in its fourth weapons launch this month, South Korea’s military said, with the apparent goal of demonstrating its military might amid paused diplomacy with the United States and pandemic border closures.

South Korea’s Joint Chiefs of Staff said the North likely fired two short-range ballistic missiles from an area in Sunan, the location of Pyongyang’s international airport. The missiles were launched four minutes apart Monday morning and flew around 380 kilometers (236 miles) on a maximum altitude of 42 kilometers (26 miles) before landing in waters off the country’s northeastern coast, it said.