In grad school, Herman Kahn was my second favorite strategic theorist (after Thomas Schelling). I still have an original edition of On Thermonuclear War with the dust jacket -- restrain your envy, my copy was marked up as I read it. In any case, Kahn is known for a number of interesting ideas, including the so-called "ladder of escalation." Essentially, Kahn's term explains gradations of conflict, from "ostensible crisis" up 40+ rungs to...