Defiant North Korea sets off nuclear explosion
North Korea
North Korean soldiers stand guard on the river bank of the North Korean town of Sinuiju, opposite the Chinese border city of Dandong Tuesday, Feb. 12, 2013. Defying U.N. warnings, North Korea on Tuesday conducted its third nuclear test in the remote, snowy northeast, taking a crucial step toward its goal of building a bomb small enough to be fitted on a missile capable of striking the United States. (AP Photo) CHINA OUT






