** FILE ** This photo combination of two satellite images made available by DigitalGlobe shows the Yongbyon nuclear complex in Yongbyon, North Korea, in an image taken on Sept. 29, 2010. The Washington-based Institute for Science and International Security said the image shows heavy construction and excavation equipment at the site and the construction of two small buildings. It estimated that North Korea was constructing a 25- to 30-megawatt light-water reactor. (AP Photo/DigitalGlobe)
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