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With test, N. Korea threat looks more real

South Korean conservative activists burn an effigy of North Korean leader Kim Jong-Un during a rally denouncing North Korea's nuclear test, in Seoul on February 13, 2013. With a defiant nuclear test, North Korea has shown it poses an increasingly credibleWith a defiant nuclear test, North Korea has shown it poses an increasingly credible threat but some doubt whether even the notoriously bellicose regime would ever use weapons of mass destruction. North Korea said it had miniaturized a nuclear device -- critical to load a missile's warhead.