North Koreans attend a rally in support of a statement given on Tuesday by a spokesman for the Supreme Command of the Korean People&#39;s Army vowing to cancel the 1953 cease-fire that ended the Korean War as well as boasting of the North&#39;s ownership of &quot;lighter and smaller nukes&quot; and its ability to execute &quot;surgical strikes&quot; meant to unify the divided Korean Peninsula, at Kim Il Sung Square in Pyongyang, North Korea, on Thursday, March 7, 2013. North Korea on Thursday vowed to launch a pre-emptive nuclear strike against the United States, amplifying its threatening rhetoric hours ahead of a vote by U.N. diplomats on whether to level new sanctions against Pyongyang for its recent nuclear test. (AP Photo/Jon Chol Jin)
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