A North Korean soldier, left, looks at the southern side as an U.S. Army soldier looks on at the border village of Panmunjom, South Korea, on Wednesday, Aug. 11, 2010. Relations between the two Koreas have been tense since the deadly sinking of a South Korean warship in late March that Seoul and the United States blame on North Korea. (AP Photo/Ahn Young-joon)

Photo by: Ahn Young-joon

A North Korean soldier, left, looks at the southern side as an U.S. Army soldier looks on at the border village of Panmunjom, South Korea, on Wednesday, Aug. 11, 2010. Relations between the two Koreas have been tense since the deadly sinking of a South Korean warship in late March that Seoul and the United States blame on North Korea. (AP Photo/Ahn Young-joon)