Since the mid-1950s, the international community has sought to ban all nuclear testing. In 1996, the Comprehensive Nuclear Test Ban Treaty emerged after three years of intense international negotiations. However, after nearly a decade, there is no sign that the treaty will ever enter into force.
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Keith A. Hansen, Consulting Professor of International Relations at Stanford University, was involved in the CTBT negotiations and implementation activities for eight years as a member of the U.S. negotiating team.