SEOUL, SOUTH KOREA - FEBRUARY 04: US Assistant Secretary of State Kurt Campbell (L) shake hands with South Korean Foreign Minister Yu Myung-Hwan during their meeting at the foreign ministry on February 4, 2010 in Seoul, South Korea. Campbell is on ...

South Korean Foreign Minister Yu Myung-hwan, right, escorts Kurt Campbell, U.S. assistant secretary of state for East Asian and Pacific Affairs, during a photo call before their meeting at Yu's office in Seoul, South Korea, Thursday, Feb. 4 ...

U.S. Assistant Secretary of State Kurt Campbell, right, talks to the media as South Korean Deputy Foreign Minister Lee Yong-joon looks on after their meeting at the Foreign Ministry in Seoul Wednesday, Feb. 3, 2010. Campbell is in Asia ...

U.S. Assistant Secretary of State Kurt Campbell speaks during a press conference at the U.S. Embassy in Tokyo, Japan, Tuesday, Feb. 2, 2010. Campbell said so-called "child abduction" issues have "raised very real concerns among senior and prominent ...