South Korea's military said Tuesday that a group of North Korean soldiers crossed the inter-Korean border briefly and that South Korean troops fired warning shots, following a similar crossing earlier this month.An official from the military said the North Korean soldiers returned after the warning shots and that the incursion seemed unintentional.On June 9, about 20 North Korean soldiers walked across the Military Demarcation Line in the Demilitarized Zone separating the two sides and returned following South Korean warning shots, according to the South's Joint Chiefs of Staff.North Korea …READ FULL ARTICLE