SEOUL - A ballistic missile that North Korea launched on Sunday flew about 500 kilometers, South Korea's military said, calling it North Korea's 'show of force' against the hard-line stance of the administration of US President Donald Trump on Pyongyang. 'The flight distance was about 500 kilometers, and South Korea and the United States are conducting a close-up analysis on additional information,' South Korea's Office of Joint Chiefs of Staff said in a statement. South Korea's presidential office said it called a national security meeting at 9:30 a.m. Seoul time.