The New York Times    

U.S. Seeks Account of North Korean Nuclear Effort

By WARREN HOGEPublished: March 6, 2007

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The United States said today that North Korea must fully disclose its efforts to produce highly enriched uranium as part of negotiations now under way in New York that are aimed at ending North Korea’s nuclear weapons program and normalizing relations between the two countries.

“They need to come clean on it, explain what they have been doing, why they have been doing it, and ultimately they need to abandon it,” Christopher R. Hill, the chief United States negotiator, said.