Kristensen, Hans M., and Robert S. Norris

Abstract
Despite the promise of a more transparent future after Russia’s ratification of New START in January 2011, the international community’s ability to monitor developments in Russia’s nuclear forces has become more difficult because the Kremlin does not release full aggregate treaty numbers of the country’s strategic nuclear forces and the United States has agreed not to make the information available as it did during START I. Despite these obstacles, the two authors estimate that Russia has more than 4,400 nuclear warheads assigned to its military forces that are undergoing widespread modernization.
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