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In this photo taken Tuesday, June 19, 2012, a South Korean Army's AH-1S Cobra flies over K1A1 tank during a South Korea-U.S. joint military live-fire drills at Seungjin Fire Training Field in Pocheon, South Korea, near the border with North Korea. The drills were held in a show of combat readiness ahead of the 62nd anniversary of the start of the Korean War on June 25. (AP Photo/Lee Jin-man)

In this photo taken Tuesday, June 19, 2012, a South Korean Army's AH-1S Cobra flies over K1A1 tank during a South Korea-U.S. joint military live-fire drills at Seungjin Fire Training Field in Pocheon, South Korea, near the border with North Korea. The drills were held in a show of combat readiness ahead of the 62nd anniversary of the start of the Korean War on June 25. (AP Photo/Lee Jin-man)

North Korea condemns ‘grave’ use of flag

North Korea publicly condemned

the use of its flag by U.S. and South Korean forces during a war

simulation as a "grave" provocation—and further justification for its

nuclear program.