N. Korea vows to cancel Korean War cease-fire

North Korea's Unha-3 rocket lifts off from the Sohae launch pad in Tongchang-ri, North Korea in this Dec. 12, 2012 file photo from the Korean Central News Agency. A rich vein of propaganda, fueled by decades-old American threats, holds that North Korea remains at risk of an unprovoked nuclear attack, though Washington and others say brinksmanship is the North's true motive.