South Korean protesters shout slogans 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 " Support, U.N. sanction strongly and Out, Kim Jong Un." (AP Photo/Lee Jin-man)