In defense of thinking. Some possible sizes and shapes of thermonuclear war. How war might come -- How a war might be fought -- Targeting objectives -- Possible types of war-eight "war surviving" situation -- Thinking about civil defense. Thinking about deterrence. Where we have been -- a brief historical review -- Where we are -- current strategic concepts -- Type I deterrence -- Type II deterrence -- Improved war outcome -- Stability -- Comprehensive arms control -- Type III deterrence -- Some strange aids to thought. Abstract model -- Scenario -- Scenario I: accidental war -- Scenario 2: Missile gap results in a calculated and controlled war -- War and peace games -- Game one -- Game two -- Game three -- Historical examples -- Some thoughts on international bargaining and the game of chicken. Seven bargaining positions -- An escalation ladder -- Another escalation ladder -- New technology and the old order. Some problems in the near future -- Thinking about the future. Fourteen alternative national policies (from renunciation to preventive war)