The main U.S. envoy to North Korea denied that nuclear talks were at a stalemate Wednesday, a day after he met with the North’s top negotiator for the first time in two months.Assistant Secretary of State Christopher Hill said North Korea insisted...

North Korea should provide a complete declaration of its nuclear programs before a new conservative government is inaugurated in South Korea next month, the top U.S. nuclear envoy said Thursday.The date marks a new deadline for the North after it failed..

North Korea is cooperating with U.S. experts to disable its nuclear weapons-making facilities, a U.S. diplomat said Tuesday after a trip to the communist nation to oversee the start of the work this week.Sung Kim, the State Department’s top expert on...