Since its creation, the European Union (EU) has been a participant in the activities of other International Organisations (IOs) or has been working together with them. Still, little information is available on what this long-term involvement with(in) IOs means for International Relations and European Studies. Why has the EU been involved with(in) IOs on such a long-term basis? How? With what impact? These three key research questions are addressed in this innovative volume, in a bid to explore the continuity of EU action with(in) IOs. While written by a diversity of authors (from European...