South Korea's military says North Korea launched another ballistic missile Tuesday morning. It wasn't immediately clear if this was a routine firing of a short-range missile or an attempt to perfect North Korea's longer-range missiles.
North Korea has accelerated its weapons testing program in defiance of United Nations sanctions as it seeks to develop a device that can deliver a nuclear warhead to North America.
It has said it is not far away from test-firing an intercontinental ballistic missile with the potential of hitting the U.S. mainland.