Abstract
This article uses Hans Kelsen's theory of a legalsystem to take a fresh look at European Community law,and the relationship between the European Community,its Member States, and international law. It arguesthat the basis of the Community's legal legitimacy isindeterminate, and offers a model to accommodate thatindeterminacy. This model is founded on aconstructivist approach suggested to be particularlyuseful in the EC context. Using this approach, it isargued that the concepts of system, autonomy andsovereignty in the Community can only be understoodthrough the recognition of a plurality of viewpoints,and that it is crucial, in describing the Community,to distinguish between a concept per se and thechoice to adopt that concept.