Theories and tests of international authority / Ian Hurd -- Delegation and the nature of Security Council authority / Erik Voeten -- International consensus and the changing legal authority of the UN Security Council / Bruce Cronin -- The Security Council as legislature / Ian Johnstone -- The challenges and perils of normative overstretch / George J. Andreopoulos -- Creating authority by the Council: the international criminal tribunals / Wayne Sandholtz -- NGOs and the Security Council: authority all around but for whose benefit? / Jonathan Graubart -- The Uniting for Peace resolution and other ways of circumventing the authority of the Security Council / Jean Krasno and Mitushi Das -- Conclusion: assessing the Council's authority / Bruce Cronin and Ian Hurd.