International Relations is the field of social science that examines the dynamics and practice of world politics in the past and the present in a theoretically informed way. In essence, it is a discipline of the social sciences that studies thoroughly the phenomenon of war and peace in space and time focusing on the relations developed between state and non-state actors in areas of human activity that go through and across borders, territories and regions. From this angle, the course provides an overview of the history and development of the discipline of international relations great debates and major schools of thought while discussing relevant methodological issues, along with aspects of the philosophy of social science.