An unidentified man stands next to a tiled fireplace where a house once stood in Hiroshima, Japan, on Sept. 7, 1945. The vast ruin is a result of "Little Boy," the uranium atomic bomb detonated on Aug. 6 by the U.S.

Docs Reveal Pentagon Plan to Destroy USSR, China as “Viable Societies” with Nuclear Weapons

With architect of mass-destruction Robert McNamara serving as the head of the Pentagon when SIOP-64 was developed, its consideration of hundreds of millions of human lives as a “yardstick” for military effectiveness is unsurprising. It is, however, no less chilling for being in character.