SEOUL: North Korea invited on Thursday the chief US envoy to stalled nuclear talks to Pyongyang, if Washington proves it is committed to an agreement that offers the North concessions for abandoning its nuclear programme. Christopher Hill, the chief US envoy to nuclear talks among the two Koreas, China, Japan, Russia and the United States, has said he is willing to meet directly with North Korea within the context of the six-party nuclear forum. But Hill has also previously indicated a desire to meet the North's leader Kim Jong-il and has not ruled out a trip to North Korea. The Bush administration has sent an envoy to Pyongyang before. "We invite the US chief delegate to the six-party talks to Pyongyang if the US has made the political decision to implement truthfully the joint statement and give us its explanation," North Korea's official KCNA news agency quoted a Foreign Ministry spokesman as saying.