Defiant North Korea sets off nuclear explosion
South Korea North Korea
South Korean protesters burn a North Korean flag during an anti-North Korea rally following a report of the nuclear test conducted by North Korea, in Seoul, South Korea, Tuesday, Feb. 12, 2013. North Korea apparently conducted a widely anticipated nuclear test Tuesday, strongly indicated by an "explosion-like" earthquake that monitoring agencies around the globe said appeared to be unnatural. The letters read "Punishment, North Korea's third-times' nuclear test." (AP Photo/Lee Jin-man)






