North Korean war veteran, Kim Hak Chol, 81, a retired soldier, right, together with other veterans decorated with medals, attend a parade to celebrate the anniversary of the Korean War armistice agreement, Sunday, July 27, 2014, in Pyongyang, North Korea.

A North Korean war veteran is decorated with medals as he attends a parade to celebrate the anniversary of the Korean War armistice agreement, Sunday, July 27, 2014 in Pyongyang, North Korea. North Koreans gathered at Kim Il Sung Square as part of celebrations for the 61st anniversary of the armistice that ended the Korean War. (AP Photo/Wong Maye-E)

North Korean war veterans express varying degrees of emotion as they watch a parade celebrating the anniversary of the Korean War, Sunday, July 27, 2014, in Pyongyang, North Korea.

North Korean soldiers watch the south side as a U.S. Army soldier stands guard after a ceremony marking the 61th anniversary of the signing of the armistice agreement that ended the Korean War, at the border villages of Panmunjom, South Korea, Sunday, July 27, 2014. North Korea fired a short-range ballistic missile into waters off its east coast on Saturday, a South Korean defense official said, adding to its unusually high number of weapons tests this year. (AP Photo/Ahn Young-joon)