United States megatonnage from 1945 to 1989 is from U.S. DOE figures. Subsequent U.S. figures and Soviet/Russian figures are based on compiler's estimates and include warheads retired but not yet dismantled. Figures for other countries include UK, France, PRC, Israel, India, Pakistan, South Africa, and North Korea and are based on compiler's estimates.
© 2001, 2003 by Wm. Robert Johnston.
Last modified 8 July 2003.
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