FILE - South Koreans watch a TV news program showing former President Jimmy Carter arriving in Pyongyang, North Korea, at the Seoul Railway Station in Seoul, South Korea, Aug. 25, 2010. Carter arrived in the capital of communist North Korea on a private, humanitarian mission to bring home an American sentenced to eight years' hard labor for trespassing. The Korean letters on the screen read: "Visit of former U.S. President Jimmy Carter in North Korea." (AP Photo/Ahn Young-joon, File)