1/10Military officials applaud with North Korean leader Kim Jong Un, during the Unhasu concert in Pyongyang, in a photo released April 16, 2013. (KCNA)
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.
2/10A firefighter tries to extinguish a U.S. Marine helicopter after it made a "hard landing" during an exercise, north of Seoul, April 16, 2013.
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.
3/10South Korean soldiers participate in a search operation during their military drill in Daejeon, south of Seoul, April 16, 2013.
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.
4/10A North Korean soldier guards the entrance to Pyongyang's Kumsusan mausoleum, where the bodies of the late leaders Kim Il Sung and Kim Jong Il lie embalmed, April 15, 2013.
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.
5/10North Korean party officials visit Mankyongdae, the birthplace of North Korean founder Kim Il-sung, on the 101st anniversary of his birth, April 15, 2013.
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.
6/10A man, center, supervises a dancing group during a mass folk dance in front of the Pyongyang Indoor Stadium, April 15, 2013.
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.
7/10Anti-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.
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.
8/10Anti-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.
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.
9/10South Korean protesters wearing envelopes participate in a rally to mark Global Day of Action on Military Spending near the U.S. embassy in Seoul, April 15, 2013.
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.
10/10Visitors use binoculars to watch North Korean territory at the unification observation post near the border village of Panmunjom, in Paju, north of Seoul, April 15, 2013.
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.
