North Korea’s envoy promised to make “sincere efforts” as diplomats prepared to resume six-nation talks Wednesday aimed at stripping Pyongyang of its nuclear weapons program, although analysts warned against expecting a breakthrough. China says the talks in Beijing – the fifth since 2003 – will last three days before a recess to let the diplomats attend an Asia-Pacific economic forum in South Korea. Participants in the nuclear talks are the two Koreas, China, the United States, Japan and Russia. Full Story