This course will provide students with an introduction to Public International law. We will discuss the role of states as the primary authors and subjects of international legal norms and obligations; the application of international law by international and national decision-makers; and the status and increasing significance of non-state actors such as intergovernmental organization (notably the United Nations), non-governmental organizations, multinational corporations, peoples, and individuals in the international legal system. In addition, the course will provide coverage of substantive law in various areas, including state jurisdiction over territory and persons, dispute settlement, state responsibility, the law on the use of force, the law of the sea, and sovereign and diplomatic immunities.