Debate about the theory underpinning the nature, workings, and development of the European (EU) has in many ways been hampered in recent years by an intellectual divergence in the two main ways that the EU is conceptualized. On the one hand is a political science and comparative government oriented strand that sees the EU as a political system in its own right. On the other is the international relations tradition which conceptualizes it as another international organization. Alongside this, the EU itself has developed a significant constitutional dimension. Indeed, the debate surrounding the...