John A. Vasquez is Thomas B. Mackie Scholar in International Relations at the University of Illinois, Urbana-Champaign. He is author of The Steps to War (2008) (with Paul Senese) and The War Puzzle Revisited (2009). He has been president of the Peace Science Society (International) and the International Studies Association.Marie T. Henehan is Director of Internships and Lecturer in the Department of Political Science at the University of Illinois, Urbana-Champaign. She is author of Foreign Policy and Congress: An International Relations Perspective and co-editor of The Scientific Study of Peace and War.

• Part 1: Theory 1. Why Do Neighbors Fight? Proximity, Interactions, or Territoriality John A. Vasquez 2. Distinguishing Rivals That Go To War from Those That Do Not: A Quantitative Comparative Case Study of the Two Paths to War John A. Vasquez Part 2: Territory and War 3. Territorial Disputes and the Probability of War, 1816-1992 John A. Vasquez and Marie T. Henehan 4. Mapping the Probability of War: The Role of Territorial Disputes Compared to the Role of Contiguity John A. Vasquez 5. The Effect of Territory on Dispute Escalation among Initiators Marie T. Henehan 6. The Probability of War, 1816-1992 John A. Vasquez Part 3: Identifying Paths to War 7. Territorial Paths to War: Their Probability of Escalation, 1816-2001 John A. Vasquez 8. Paths to War: The Territorial Origins of War John A. Vasquez Part 4: Territory and Peace 9. The Changing Probability of Interstate War, 1816-1992 Marie T. Henehan and John A. Vasquez 10. Peace, Globalization, and Territoriality John A. Vasquez and Marie T. Henehan Part 5: Conclusion 11. The Significance of Territory John A. Vasquez

John A. Vasquez is Thomas B. Mackie Scholar in International Relations at the University of Illinois, Urbana-Champaign. He is author of The Steps to War (2008) (with Paul Senese) and The War Puzzle Revisited (2009). He has been president of the Peace Science Society (International) and the International Studies Association.Marie T. Henehan is Director of Internships and Lecturer in the Department of Political Science at the University of Illinois, Urbana-Champaign. She is author of Foreign Policy and Congress: An International Relations Perspective and co-editor of The Scientific Study of Peace and War.

• Part 1: Theory 1. Why Do Neighbors Fight? Proximity, Interactions, or Territoriality John A. Vasquez 2. Distinguishing Rivals That Go To War from Those That Do Not: A Quantitative Comparative Case Study of the Two Paths to War John A. Vasquez Part 2: Territory and War 3. Territorial Disputes and the Probability of War, 1816-1992 John A. Vasquez and Marie T. Henehan 4. Mapping the Probability of War: The Role of Territorial Disputes Compared to the Role of Contiguity John A. Vasquez 5. The Effect of Territory on Dispute Escalation among Initiators Marie T. Henehan 6. The Probability of War, 1816-1992 John A. Vasquez Part 3: Identifying Paths to War 7. Territorial Paths to War: Their Probability of Escalation, 1816-2001 John A. Vasquez 8. Paths to War: The Territorial Origins of War John A. Vasquez Part 4: Territory and Peace 9. The Changing Probability of Interstate War, 1816-1992 Marie T. Henehan and John A. Vasquez 10. Peace, Globalization, and Territoriality John A. Vasquez and Marie T. Henehan Part 5: Conclusion 11. The Significance of Territory John A. Vasquez

John A. Vasquez is Thomas B. Mackie Scholar in International Relations at the University of Illinois, Urbana-Champaign. He is author of The Steps to War (2008) (with Paul Senese) and The War Puzzle Revisited (2009). He has been president of the Peace Science Society (International) and the International Studies Association.Marie T. Henehan is Director of Internships and Lecturer in the Department of Political Science at the University of Illinois, Urbana-Champaign. She is author of Foreign Policy and Congress: An International Relations Perspective and co-editor of The Scientific Study of Peace and War.

• Part 1: Theory 1. Why Do Neighbors Fight? Proximity, Interactions, or Territoriality John A. Vasquez 2. Distinguishing Rivals That Go To War from Those That Do Not: A Quantitative Comparative Case Study of the Two Paths to War John A. Vasquez Part 2: Territory and War 3. Territorial Disputes and the Probability of War, 1816-1992 John A. Vasquez and Marie T. Henehan 4. Mapping the Probability of War: The Role of Territorial Disputes Compared to the Role of Contiguity John A. Vasquez 5. The Effect of Territory on Dispute Escalation among Initiators Marie T. Henehan 6. The Probability of War, 1816-1992 John A. Vasquez Part 3: Identifying Paths to War 7. Territorial Paths to War: Their Probability of Escalation, 1816-2001 John A. Vasquez 8. Paths to War: The Territorial Origins of War John A. Vasquez Part 4: Territory and Peace 9. The Changing Probability of Interstate War, 1816-1992 Marie T. Henehan and John A. Vasquez 10. Peace, Globalization, and Territoriality John A. Vasquez and Marie T. Henehan Part 5: Conclusion 11. The Significance of Territory John A. Vasquez