North Korea has issued fresh threats against South Korea, vowing retaliation for recent protests in Seoul that it says "hurt the dignity" of the leadership in Pyongyang.
North Korea Vows Retaliation for Anti-Pyongyang Protests in Seoul

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North Korean party officials visit Mankyongdae, the birthplace of North Korean founder Kim Il-sung, on the 101st anniversary of his birth, April 15, 2013.

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A man, center, supervises a dancing group during a mass folk dance in front of the Pyongyang Indoor Stadium, April 15, 2013.

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Anti-North Korean protesters chant slogans in front of effigies of North Korean leader Kim Jong Un (L) and his father, Kim Jong Il, in central Seoul, April 15, 2013.

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Anti-war activists wearing military clothes of a North, left, and South Korean hug each other during a rally to mark Global Day of Action on Military Spending in front of the National Assembly in Seoul, April 15, 2013.