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Washington is maintaining a tough stance on North Korea building an experimental light-water reactor at its Yongbyon nuclear site.
During a press briefing on Friday, US State Department spokesman Philip Crowley pointed out that the construction of a reactor is a military program which poses a danger to the region and the rest of the world.
Crowley emphasized that if Pyeongyang continues to carry out its nuclear program it would be unable to maintain a normal relationship with other countries, including the United States.
The spokesman urged the communist state "to live up to its commitments" made in the six-party nuclear talks back in 2005 to denuclearizeand pledged to support the North "on how to meet its energy requirements" if it takes appropriate steps to do so.