Because there is now more available data, the time is right to reexamine some long-held assumptions about whether a significant advantage in nuclear weapons is, in fact, an advantage. Matthew Kroenig offers new theoretical and methodological perspectives in his attempt to do just that. Theoretically, he proposes a synthesis of two theories to argue that nuclear superiority allows for a state to be more aggressive in international crises. Methodologically, he seeks to demonstrate the effect a single independent variable has on multiple dependent variables. Either one of these advances would represent a significant contribution to the literature of nuclear statecraft and compellence. Kroenig combines both in a thorough and compelling work.