1. The role of experts in international and European decision-making processes: setting the scene Monika Ambrus, Karin Arts, Ellen Hey and Helena Raulus; Part I. Theorizing Expert Involvement in International and European Decision-Making: 2. Ideas, experts and governance Peter M. Haas; 3. The politics of expertise: applying paradoxes of scientific expertise to international law Wouter G. Werner; 4. Reflections on the different roles of expertise in regulatory policy-making Lorna Schrefler; 5. The virtues of expertise Jan Klabbers; Part II. Expert Involvement in International Decision-Making in the Environmental Sphere: 6. The role of scientific expertise in multilateral environmental agreements: influence and effectiveness Steinar Andresen; 7. Changing demands at the science-policy interface: organisational learning in the IPCC Bernd Siebenhüner; 8. Global scientific assessments and environmental resource governance: towards a science-policy interface ladder Joyeeta Gupta; Part III. Experts in the WTO and Risk Regulation: 9. The structural logic of expert participation in WTO decision-making processes Jessica Lawrence; 10. Health risks, experts and decision making within the SPS Agreement and the Codex Alimentarius Alexia Herwig; 11. The role of experts in environmental and health-related trade disputes in the WTO: deconstructing decision-making processes Lukasz Gruszczynski; Part IV. Experts in Human Rights Related Decision-Making Processes: 12. Human rights experts in the United Nations: a review of the role of UN special procedures Surya P. Subedi; 13. 'Experts': the mantra of irregular migration and the reproduction of hierarchies Jeff Handmaker and Claudia Mora; 14. Private carriers as experts in immigration control Sophie Scholten and Ashley Terlouw; Part V. Experts in Decision-Making Processes of the European Union: 15. The European system of financial supervision: a technology of expertise Michelle Everson; 16. The role of experts and financial supervision in the European Union: the de Larosière Commission Karim Knio; 17. Expertise at the crossroads of national and international policy-making: a public management perspective Adriaan Schout and Jaap Sleifer; 18. Blurred areas of responsibility: European agencies' scientific 'opinions' under scrutiny E. Madalina Busuioc.