Tensions are at their highest in years, with the North and the U.S.-backed South demonstrating their military preparedness.
A U.S. Air Force B-2 stealth bomber flies near Osan U.S. Air Base in Pyeongtaek, south of Seoul, South Korea, March 28, 2013.
South Korean vehicles return from a joint industrial complex at the North Korean city of Kaesong as a U.S. Army soldier watches at the customs, immigration and quarantine office, near the Demilitarized Zone, March 28, 2013.
South Korean army soldiers patrol along a barbed-wire fence near the border village of Panmunjom in Paju, South Korea, March 27, 2013.
A man walks past propaganda posters that threaten punishment to the "U.S. imperialists and their allies," Pyongyang, North Korea, March 26, 2013.