https://www.thebulletin.org/article_nn.php?art_ofn=ja06norris
NRDC : Nuclear Notebook
Global nuclear stockpiles, 1945-2006
By Robert S. Norris and Hans M. Kristensen
July/August 2006 pp. 64-66 (vol. 62, no. 4) ) © 2006 Bulletin of the
Atomic Scientists
Excessive secrecy prohibits the public from knowing the exact number of
nuclear weapons in the world. Each nation shields the details of its
own nuclear arsenal and generally knows few precise details about the
size and (...)