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A military vehicle carries what is believed to be a Taepodong-class missile Intermediary Range Ballistic Missile (IRBM), about 20 meters long, during a military parade to mark the 100 birth of the country's founder Kim Il-Sung in Pyongyang on April 15, 2012. The commemorations came just two days after a satellite launch timed to mark the centenary fizzled out embarrassingly when the rocket apparently exploded within minutes of blastoff and plunged into the sea.    AFP PHOTO / PEDRO UGARTE (Photo credit should read PEDRO UGARTE/AFP/Getty Images)
A military vehicle carries what is believed to be a Taepodong-class missile Intermediary Range Ballistic Missile (IRBM), about 20 meters long, during a military parade to mark the 100 birth of the country's founder Kim Il-Sung in Pyongyang on April 15, 2012. The commemorations came just two days after a satellite launch timed to mark the centenary fizzled out embarrassingly when the rocket apparently exploded within minutes of blastoff and plunged into the sea.    AFP PHOTO / PEDRO UGARTE (Photo credit should read PEDRO UGARTE/AFP/Getty Images)

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    North Korean military movement has US concerned

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North Korean military movement has US concerned

U.S. officials are deeply concerned by the recent repositioning of personnel and hardware at a satellite launching facility in North Korea. CNN's Barbara Starr reports.

North Korean military movement has US concerned

U.S. officials are deeply concerned by the recent repositioning of personnel and hardware at a satellite launching facility in North Korea. CNN's Barbara Starr reports.