North Korea has warned the world that no change its course is to be expected under its young new leader Kim Jong-un, as the country has vowed a "roar of revenge" against South Korean President Lee Myung-bak.

"We declare solemnly and confidently that the foolish politicians around the world, including the puppet group in South Korea, should not expect any change from us," the North Korean National Defense Commission said Friday, as cited by The Boston Globe.

Following the death of North Korean dictator Kim Jong-il, the South Korean Prime Minister raised security alerts in his country and declined to send an official mission to pay condolences to its neighbor.

The National Defense Commission has declared that it will "have no dealings with the Lee Myung Bak group of traitors forever," saying the "evil misdeeds" of the Lee administration reached a peak when it prevented South Koreans from visiting North Korea to pay respects to Kim Jong-il.

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