The document provides an overview of the field of international relations. It discusses the following key points:
- International relations emerged as a formal academic discipline in 1919, drawing on fields like political science, economics, and law.
- Major theories studied in international relations include realism, liberalism, Marxism, and constructivism. Realism focuses on state security and power, while liberalism emphasizes cooperation.
- The modern international system developed out of European colonial expansion and the Treaty of Westphalia in 1648, which established principles of state sovereignty.
- Major events like the French Revolution and decolonization shaped the current global order of independent nation-states. However, some states operate outside this