SEOUL, South Korea — A private American security institute on Thursday said new satellite images and interviews with American experts show North Korea is constructing an experimental light-water nuclear reactor at its main Yongbyon atomic complex.
The Washington-based Institute for Science and International Security said that the North's reactor is 25 to 30 megawatts. Light-water reactors are ostensibly for civilian nuclear power.
The institute based its report on satellite images from Nov. 4 and information from Siegfried Hecker, former director of the US Los Alamos Nuclear Laboratory, and Jack Pritchard, a former US envoy for negotiations with North Korea.
Hecker and Pritchard recently returned from a trip to Yongbyon.
North Korea vowed in March to build a light-water reactor.