As someone who has studied the nuclear world for 40 years and has interviewed hundreds of its denizens for a book and many articles, I have learned this: When it comes to nuclear strategy, there is no reality. The weapons are real, and their destructive power is cataclysmic. But the countless attempts to harness this destruction into an elaborate war-fighting strategy are excursions into metaphysics, not the hard-boiled realism that its purveyors like to believe.
