The chief U.S. envoy at six-nation talks on North Korea’s nuclear disarmament met with his South Korean counterpart Friday after spending three days in the North trying to persuade it to resume dismantling its nuclear program. Assistant Secretary of State Christopher Hill told reporters after meeting with South Korean nuclear envoy Kim Sook that his talks in North Korea had been “substantive and lengthy.” He said he could not say more until he had reported to U.S. Secretary of State Condoleezza Rice and the other nations in the six-party talks. Full Story