This paper is a fascinating and useful compendium of highlights from Herman Kahn's works on nuclear strategy, with excerpts chosen by Hudson Trustee John Wohlstetter from On Thermonuclear War (1960), Thinking About the Unthinkable (1962), On Escalation (1965), and Thinking About the Unthinkable in the 1980s (1984 posth.).

Caption
The P4 laboratory, on the campus of the Wuhan Institute of Virology, in Wuhan, in China's central Hubei province. (Hector Retamal/AFP via Getty Images)