What do you study in international relations?

International relations mainly refers to the study of the interaction between actors in international relations and the operation and evolution of various international systems. It is a branch of political science, and its main research fields are political phenomena at the level of international system such as war and peace, cooperation, integration and international organizations. International relations is not only an academic field, but also a public policy field. As a part of political science, international relations is also closely related to philosophy, economics, history, law, geography, sociology, anthropology, psychology and other disciplines. From globalization to territorial disputes, nuclear crisis, nationalism, terrorism and human rights, they are all subjects of international relations research. The rudiments of international relations are scattered among classical political philosophers, but few people have specifically discussed international political issues. The First World War can be regarded as the direct cause of the establishment of international politics. 19 19 The establishment of the Chair of International Politics in Arberry Swath University is regarded as a sign of the initial establishment of this discipline. From 65438 to 0927, the Department of International Politics of the London School of Economics and Political Science and the Geneva Institute of Advanced International Relations were established at the same time, representing the gradual maturity of the discipline. After more than 90 years of discipline development and four paradigm debates, there are three main schools in academic circles: realism, liberalism and constructivism. The research objects of international relations include sovereign countries and international organizations.