fter high-level talks with North Korea, China has told the United States that Pyongyang is committed to resuming six-country negotiations on its nuclear weapons programs but no dates have been set, a senior U.S. official told Reuters. In an interview late on Thursday, he said Chinese President Hu Jintao’s promise to visit Pyongyang later this year appeared a key factor in North Korea’s decision, although whether Hu would make the trip before or after the six-country talks was unclear. Full Story