The first part of the course introduces the main theoretical approaches that provide alternative explanations for key questions about international institutions: their creation, institutional design, decision-making processes, their impact and their interactions with other international institutions. The second part analyses these key questions with regard to specific international institutions, including the United Nations, the European Union, the North Atlantic Treaty Organisation, the World Trade Organisation, the International Monetary Fund and the World Bank, as well as international institutions in the areas of human rights, environmental protection, and health policy.