CHEORWON-GUN, SOUTH KOREA - MAY 20: South Korean soldiers take part in the military exercise on May 20, 2015 in Cheorwon-gun, South Korea. The 8th Infantry Division of South Korean Army at the front-line of the South-North border invites the international media to their military training amid the tension between South and North Korea. (Photo by Chung Sung-Jun/Getty Images)
