This full-term study of the Western European Union (WEU) brings to life the history of Europe-s search for a co-operative security and defence order, from its post World War II origins to the present day. Establishing the WEU as a support organization, designed to promote the two security "ideas" of collective defence and integration through the primary organizations of Alliance and Community, this book offers a window onto the challenges faced in the development and management of NATO and the evolving EC/EU over time. As the WEU-s historical journey unfolds, the frequently competing visions of the future organization of the European security space are exposed in the fluctuating nature of its own functional evolution and devolution. A hybrid organization driven by its dual support role, the constructively ambiguous and conveniently autonomous WEU was to provide a mechanism through which divergent interests could converge and inherent tensions be relieved, preventing NATO and EC