Pentagon: It only takes once

North Korea warns 'moment of explosion' nears

(CNN) -- North Korea stirred up fresh unease in Northeast Asia early Thursday, threatening attacks by a "smaller, lighter and diversified" nuclear force and warning, "The moment of explosion is approaching fast." The new threat came after the North Koreans locked South Korean workers out of a joint factory complex and announced plans to restart a nuclear reactor it shut down five years ago. 

Meanwhile, the United States announced it was sending ballistic missile defenses to Guam, a Pacific territory that's home to U.S. naval and air bases. "The moment of explosion is approaching fast. No one can say a war will break out in Korea or not and whether it will break out today or tomorrow," North Korea's state news agency KCNA declared in its latest broadside.

 "The responsibility for this grave situation entirely rests with the U.S. administration and military warmongers keen to encroach upon the DPRK's sovereignty and bring down its dignified social system with brigandish logic."

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http://www.cnn.com/2013/04/03/world/asia/koreas-tensions/index.html