Abstract

This article investigates the theoretical assumptions and implications of de Ste. Croix’s approach to interstate politics in The Origins of the Peloponnesian War. It suggests that two approaches can be identified in the work: one which sees a fundamental connection between political systems within a state and that state’s conduct of interstate politics, and another, closer to conventional ‘Realist’ theories, which sees a clear dividing line between domestic and interstate politics, and in which interstate relations need to be understood according to a distinct analytical framework. Although this tension was probably not a particular concern to de Ste. Croix himself, it does have a bearing on ongoing debates in International Theory; the final part of the article briefly explores the possibility that the concept of ‘compulsion’, important to both Thucydides’ and de Ste. Croix’s understanding of the causes of the Peloponnesian War, might provide a way of reconciling these two approaches.