A US diplomat expressed satisfaction with a visit by a three-country team of experts to North Korea's main nuclear facilities to determine how to disable the complex so it cannot produce material for bombs.
Sung Kim, chief Korea expert for the US State Department, told reporters the group of American, Chinese and Russian officials had seen the main facilities at the home of North Korea's nuclear weapons program in Yongbyon, 100 kilometers (60 miles) north of the capital Pyongyang.
"I think it was useful," Kim said after returning Thursday evening to Pyongyang, broadcaster APTN reported.
He declined further comment saying he had to report to superiors first. Other experts refused to comment.