9 Stetter, S., ‘Cross-Pillar Politics: Functional Unity and Institutional Fragmentation of EU Foreign Policies’, Journal of European Public Policy, 4:11 (2004), pp. 720–39CrossRefGoogle Scholar; Smith, M. E., Europe's Foreign and Security Policy: The Institutionalization of Cooperation (New York: Cambridge University Press, 2004)Google Scholar; Bátora, J., ‘Does the European Union Transform the Institution of Diplomacy?’, Journal of European Public Policy, 1:12 (2005), pp. 44–66Google Scholar; Diez, T., Manners, I., and Whitman, R., ‘The Changing Nature of International Institutions in Europe: The Challenge of the European Union’, Journal of European Integration, 33:2 (2011), pp. 117–38CrossRefGoogle Scholar.