Contributor(s): Professor A. John Simmons | Modern states claim a wide variety of rights of control over particular geographical territories. These claims, however, are regularly disputed, often leading to violence. This fact makes practically pressing the questions, to be explored in these lectures, of how and to what extent such territorial claims by states can be justified. A. John Simmons (Ph.D., Cornell) is Commonwealth Professor of Philosophy, and professor of Law; editor, Philosophy and Public Affairs; Editorial Board member, Social Theory and Practice. He specialises in political philosophy, ethics, history of moral and political theory, and philosophy of law.