US nuclear envoy to bring new proposal to North Korea

The chief US nuclear negotiator visited North Korea to try to salvage a derailed disarmament pact Wednesday, while a news report saying the communist nation may be restoring its nuclear test site added urgency to the mission. Assistant Secretary of State Christopher Hill crossed into the North through the heavily fortified Demilitarized Zone dividing the two Koreas, US Embassy spokesman Aaron Tarver said. His trip comes as Pyongyang has been growing increasingly defiant of international efforts to end its nuclear programs. The North stopped dismantling and began restoring its nuclear facilities in mid-August, and last week it ordered UN nuclear monitors to leave the country in violation of an international accord. In a further sign of Pyongyang's defiance, South Korea's Yonhap news agency reported Wednesday that there are indications the North has started to restore the site where it conducted its first-ever nuclear test blast in October 2006.