In honour of Prof. Kalevi Holsti's 80th birthday, this book includes key texts by the renowned Canadian International Relations scholar on war, the state, peace, and the international order. The first part includes texts on the Study of War, Use of Force in International Politics: Four Revolutions, and The Decline of Interstate War, while the second part analyses International Sports Competition and the Creation and Sustenance of Statehood, as well as Internationalism and Nationalism within the Multi-Community State. The third part addresses The Peacemakers: Issues and International Order, Governance Without Government: Polyarchy in 19th-Century European International Politics, and The Post-Cold War 'Settlement' in Comparative Perspective. Prof. Holsti is a former president of the International Studies Association and the author of a major textbook that was translated into Mandarin, Korean, Japanese, and Bahasa Indonesian. Thousands of undergraduates around the world are acquainted with his work.