The Rights of War and Peace establishes a system of international law based on the concept of natural law. Natural law, as Grotius describes it, is law that applies to all people, regardless of country or nationality. This law establishes concepts like "justifiable war" and "natural justice." Grotius discusses situations under which countries should go to war, and then further explains the proper way in which wars should be prosecuted. There are, he says, certain rules in warfare that must be observed, regardless of whether the parties involved have signed any specific agreement to do so. Philosophy and law students, as well as those with an interest in international politics, will be amazed at how modern many of Grotius's ideas seem and intrigued by this foray into international law that still has repercussions in the world today. HUGO GROTIUS (1583-1645) was born in the city of Delft in the Dutch Republic. Astoundingly intelligent, he entered the University of Leiden at age eleven and graduated at age fifteen. He was a philosopher and Christian apologist now remembered for his work in establishing a philosophical basis for international law.

The author of this book examines the arguments over the moral basis for war and international aggression. He links the debates to the great political theorists such as Hobbes, Locke, Rousseau, and Kant. This is not only an account of international law: the author also reviews the ideas about inter-state relations and the formation of modern liberal politics.

The Rights of War and Peace is the first fully historical account of the formative period of modern theories of international law. It sets the scene with an extensive history of the theory of international relations from antiquity down to the seventeenth century. Professor Tuck then examines the arguments over the moral basis for war and international aggression, and links the debates to the writings of the great political theorists such as Hobbes, Locke, Rousseau, and Kant. This is not only an account of international law: as Professor Tuck shows, ideas about inter-state relations were central to the formation of modern liberal political theory, for the best example the kind of agent which liberalism presupposes was provided by the modern state. As a result the book illuminates the presuppositions behind much current political theory, and puts into a new perspective the connection between liberalism and imperialism.