Throughout the world, stockpiles of uranium and plutonium, as well as other radioactive materials, are stored in inadequate facilities

. Despite the potential danger, they do not receive the level of scrutiny warranted by the potentially devastating implications of a security failure.  As world leaders gather for the fourth and final Nuclear Security Summit in Washington, D.C., this feature, produced by Carnegie Corporation of New York, examines these threats and what can be done to prevent a nuclear catastrophe

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