Part of a series on international relations, this book examines the impact of legal change on war. Although considerable scientific effort has been made to obtain reproducible evidence on how polarity, capability, and other international structural attributes of the international system may influence the amount of war, almost no empirical work on the impact of cultural attributes (the distribution of personality types, attitudes, and opinions among society's members) has emerged. The book analyzes the changes that have occurred since the Congress of Vienna in norms pertaining to negotiation, mediation, arbitration, adjudication, and other types of legal control over war.