“Theories of International Relations” by Ole R. Holsti is a comprehensive analysis of the major theoretical frameworks that explain the dynamics of global politics. Holsti reviews key theories such as realism, which focuses on the struggle for power and national interest in an anarchic international system, and liberalism, which emphasizes cooperation, international institutions, and the role of democracy. He also explores other perspectives, like constructivism, which argues that international relations are shaped by social structures, identities, and shared norms, and Marxism, which views global politics through the lens of economic class struggle and imperialism. Holsti critiques and compares these approaches, showing how each theory provides a different lens to understand issues like war, peace, diplomacy, and global governance. His work highlights the importance of using multiple frameworks to grasp the complexities of international relations.