N Korea visit a success: U.S. Envoy
He said that both Washington and Pyongyang have re-affirmed their commitment to a February accord aimed at North Korea's denuclearisation. They are also ready for an early meeting of the six-party nuclear envoys.
Progress has been delayed by a row over frozen North Korean funds. The U.S. says the money has already been transferred from a Macau bank to North Korea, but Pyongyang has not yet confirmed this.