South Korean Prime Minister Chung Un-chan, right, holds a machine gun as he visited at a military base near the demilitarized zone at Yeonchon County,Seoul, Friday, Dec. 11, 2009. North Korea said Friday it will work with the United States to resolve unspecified 'differences' remaining after rare high-level talks with President Barack Obama's envoy aimed at restarting international nuclear negotiations.
(AP Photo/Yonhap, Lee Sang-hak)