One of the fundamental issues of international relations concerns whether, and under what conditions, stability prevails in anarchic systems--systems in which all authority and institutional restraints to action are wholly endogenous. This book uses the tools provided by contemporary game theory to develop a comprehensive theory of such systems and details both necessary and sufficient conditions for stability. The authors first define two forms of stability--system and resource stability. International political systems are said to be stable when no state confronts the possibility of a loss...