North Korean soldiers drive a craft to patrol along the banks of the Yalu River near the North Korean town of Sinuiju, opposite the Chinese border city of Dandong, northeastern China's Liaoning province, May 29, 2009. South Korea and the United States raised the military alert level for the peninsula on Thursday after the communist North warned the truce ending the Korean War was dead and it was ready to attack. North Korea ramped up tensions this week with a series of provocations rarely seen since the 1950-53 Korean War, including war threats, missile launches and a nuclear test that puts it closer to having an atomic bomb. REUTERS/Jason Lee (NORTH KOREA POLITICS MILITARY IMAGES OF THE DAY)