Preface.- Part I Size.- Chapter 1: Mega-states vs. Compact Powers: Risks in the Emerging International System.- Chapter 2: Effects of the Size of a Country on its Economic Performance.- Part II Political Regimes and Social Structure.- Chapter 3: Analyzing Dependence and Conflict in a Heterogeneous World: Computer Simulation and Evolutionary Dynamics.- Chapter 4: The Superficial Success of the Development Assistance Committee: Emerging Donors and the Revival of Economic Statecraft.- Chapter 5: How Structural Heterogeneities turned into Political Issues: Lessons from the U.S.-Japan Structural Talks.- Part III Inside a State.- Chapter 6: Role of Third-Party Guarantors in Uncertainty of Preventive Civil War: Can Thucydides Trap be resolved?.- Chapter 7: Public Opinion and Foreign Policy: The Effect of Information Stimulus on Levels of Support for Foreign Aid and Coalition Withdrawal.- Part IV Interactions between the International System, Domestic Society, and Individuals.- Chapter 8: Agent-Based Simulation as a Method for International Political Science: A Way of Expressing Diversity.- Chapter 9: Considering Provision of Global Public Goods with Community Task Game: A Multi-Agent Simulation Analysis.