Thick wall: South Korean visitors look to the North Korean side through a wire fence decorated with a variety of ribbons with messages wishing for the reunification of both the Koreas, on the border at the Imjingak Pavillion in Paju, near the demilitarized zone (DMZ) of Panmunjom, South Korea, Tuesday. North Korea's military abruptly canceled a rare meeting Tuesday with the American-led U.N. Command that had been arranged to discuss the deadly sinking of a South Korean warship blamed on Pyongyang. AP/Ahn Young-joon