The document discusses different perspectives on realism in international relations. It begins by summarizing key events related to the Bretton Woods system and the Marshall Plan. It then discusses the Melian Dialogue case study on realism and power politics. The Athenians assert their military dominance over the Melians, exemplifying realist views of power determining justice. The document defines realism as states pursuing self-interest and power in an anarchic system. It outlines the basic assumptions of realism and contrasts them with idealism. It also examines different traditions in realism through thinkers like Thucydides, Hobbes, Machiavelli, and Rousseau. The evolution and different types of realism are summarized,