A North Korean soldier, left, salutes to his senior North Korean soldier as a South Korean soldier stands guard, center bottom, at the border village of the Panmunjom (DMZ) that separat

 

              A North Korean soldier, left, salutes to his senior North Korean soldier as a South Korean soldier stands guard, center bottom, at the border village of the Panmunjom (DMZ) that separat
A North Korean soldier, left, salutes to his senior North Korean soldier as a South Korean soldier stands guard, center bottom, at the border village of the Panmunjom (DMZ) that separates the two Koreas since the Korean War, in Paju, north of Seoul, South Korea, Tuesday, March 19, 2013. The United States is flying nuclear-capable B-52 bombers on training missions over South Korea to highlight Washington's commitment to defend an ally amid rising tensions with North Korea, Pentagon officials said Monday.(AP Photo/Lee Jin-man)