These three books cover the gamut of argument about deterrence, ranging from its politics to its theoretical status and its morality. The authors, while diverse in their professional status, being government 'experts', lawyers, theologians, political scientists and philosophers, all have this in common: they seek to tell us what to do. They attempt to relate theory to practice either to justify instrumental means or goals or to prescribe them. In this sense they are all contributors to the field of strategic reasoning.