The disciplinary landscape of International Relations (IR) has expanded considerably in the early twenty-first century, with a number of new challenges confronting a now outmoded global architecture of power. IR's traditional concern with war, security and diplomacy have been called into question by the end of the Cold War and the War On Terror and have been further complicated by far-reaching epistemological and methodological shifts in social theory. Debates about the nature of globalisation, international institutions, development/post-development, global political economy, culture and identity, citizenship and rights bear prominently on efforts to understand the ebb and flow of contemporary IR. In theory and practice, understanding the modalities of power in constituting the ‘international,’ as well as challenges to hegemonic stabilizations of it, has gained a particular urgency, making the study of IR central to apprehending the complexity of global social life.