On May 25 , 2009 , North Korea detonated a nuclear device underground . The test was condemned by the United Nations , NATO , the other five members of the Six-party talks , and many other countries worldwide . . On October 11 , 2011 , South Korea appointed a new envoy to the Six-party talks ; Lim Sung-Nam , who worked for the Ministry of Tourism and Sport beforehand
detonated a nuclear device underground
2009 North Korean nuclear test
Six-party talks