North Korea 'preparing for large-scale military exercise' A drill involving aircraft and artillery units may take place near the port city of Nampho, around 30 miles south west of Pyongyang and 200 miles across the Yellow Sea from the Chinese city of Dalian. It appears that the scale of the drill will be quite big. There is no way to tell when it will actually kick off, but there is a chance the North may opt to launch short range missiles as part of its show of force," an unnamed South Korean government official told Yonhap, the news agency. However, other unnamed military sources in Seoul told Yonhap that while there has been increasing movement in the North Korean military, there is no clear evidence to suggest an exercise is imminent. "A large part of the North's military is currently being used to help spring farming, although the South remains on guard against potential blitzkrieg like attacks," one officer said. While South Korean and American intelligence warned earlier this month that the North was likely to fire a medium-range Musudan missile, no such launch has yet occurred. Tomorrow, the last 50 South Korean workers are scheduled to leave the Kaesong Industrial Complex, a factory park inside North Korea. After they leave, one military official suggested to Yonhap that the North may once again "heighten military tension."