Determining the initial balance between hard-liners and accommodationists. Domestic reactions to the steps to war. War initiation. Domestic constraints on war

7. Explaining World War: Its Scope, Severity, and Duration. What are world wars? Factors promoting the expansion of war. The necessary conditions of world war. Duration

8. Peace. The nature of peace. Characteristics of peaceful periods. The relationship of peace to war

9. Conclusion: Solving the Puzzle of War. The onset of war. The expansion of war. Peace research and the cumulation of scientific knowledge.