The Role of International Organizations in Today's World -- Intellectual Roots of International Organization -- Early Organizational Efforts -- International Relations, Globalization, and Global Governance -- International Organization and Governance in a Turbulent Time -- A Great Experiment: The League of Nations -- Founding of the League of Nations -- Essential Features of the League -- Successes and Failures of the League of Nations -- General Assessment of the League of Nations -- The Genesis of the United Nations -- Preliminary Stages of Postwar Planning -- The Dumbarton Oaks Conversations -- From Yalta to San Francisco -- The San Francisco Conference -- Launching the New Organization -- Basic Principles and Organization of the United Nations -- Objectives of the United Nations -- Basic Principles of the Charter -- Principal Organs of the United Nations -- Basic Structure and Operations of the United Nations -- The Membership Issue -- Problems of Representation -- Voting Rules and Practices -- Formal and Informal Charter Amendment -- Financial Problems -- Peaceful Settlement of Disputes -- Importance of Peaceful Settlement -- Charter Procedures and Methods -- United Nations Experience--Survey and Case Studies -- Changing Roles of UN Organs -- General Appraisal and Future Requirements -- Collective Security and its Alternatives: Theory and Practice -- The Nature of Collective Security -- The League of Nations and Collective Security -- Charter Provisions and Realities -- Peacekeeping Innovations.