Welcome to this Issue of National Security Science

This issue provides both intriguing questions and some surprising answers, says Bob Webster, Principal Associate Director, Weapons Programs.

December 1, 2016

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Managing Editor
Clay Dillingham
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In a national emergency, could the United States safely test a nuclear weapon tomorrow?

In 1992, the nation made a decision to forgo full-scale underground nuclear weapons testing: after conducting more than 1,000 tests since the end of World War II. However, under Presidential Decision Directive 15 (1993) there is a legal requirement to be able to execute a test within 24–36 months if required. In a national emergency, could the United States safely test a nuclear weapon tomorrow?