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By Hans M. Kristensen
The world’s nuclear weapon states possess an estimated 22,600 nuclear weapons, of which more than 7,500 are deployed. This and much more according to a chapter I co-authored in the latest yearbook from the Swedish International Peace Research Institute (SIPRI).
Copyright prevents us from making a copy of the chapter available here, but we’re allowed to share a PDF-copy with individual contacts. Otherwise a brief summary is available here. The estimates are similar to the ones I update on the FAS web site, with slight differences due to production time and counting categories, and are based on the analysis I do with Robert Norris in the Nuclear Notebook in the Bulletin of the Atomic Scientists.
This publication was made possible by a grant from Carnegie Corporation of New York and Ploughshares Fund. The statements made and views expressed are solely the responsibility of the author.