Kim's War Machine

If they were images of anywhere else in the world, the photographs would suggest something quite benign: columns of black smoke swirling harmlessly out of a tall chimney across a snowy landscape. But the shots taken earlier this month by U.S. spy satellites were of the Yongbyon nuclear facility, ground zero for the North Korean nuclear threat—and where there's smoke, there's fire. Analysts say the photos indicate North Korea has taken yet another step toward building multiple atomic weapons. The smoke is rising from a coal-fired steam plant. It produces energy for a reprocessing facility...

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