Violence and war were ubiquitous features of politics long before the emergence of the modern state system. Since the 1780s revolutions and terrorism have also challenged the idea of the state as a final arbiter of international order. This book covers ten major theorists of politics, violence and relations between states - Thucydides, Augustine, Machiavelli, Hobbes, Locke, Rousseau, Clausewitz, Lenin and Mao, and Schmitt. Each thinker is considered...