This chapter presents an overview of how three theoretical approaches - bureaucratic politics, new institutionalism and principal-agent models - have been applied to research on EU foreign policy and what their contribution is to this field. Employing a broad understanding of EU foreign policy, it not only discusses the application of these three theoretical perspectives to the Common Foreign and Security Policy (CFSP), but also examines research conducted on, for instance, trade policy or the EU's position in international institutions.
Delreux, T. (2015). Bureaucratic Politics, New Institutionalism and Principal-Agent Models. In Jørgensen K., Aarstad A., Drieskens E., Laatikainen K., Tonra B. (ed.), The SAGE Handbook on European Foreign Policy (p. p. 152-165). SAGE. https://doi.org/10.4135/9781473915190.n10