This volume examines the complex international system of the twenty first century from a variety of perspectives. Proceeding from critical theoretical perspectives and incorporating case studies, the chapters focus on broad trends as well as micro-realities of a Post-Westphalian international system. The process of transformation and change of the international system has been an ongoing cumulative process. Many forces including conflict, technological innovation, and communication have contributed to the creation of a transnational world with political, economic, and social implications for all societies. Transnationalism functions both as an integrative factor and one which exposes the existing and the newly emerging divisions between societies and cultures and between nations and states. The chapters in this volume demonstrate that re-thinking fundamental assumptions as well as theoretical and methodological premises is central to understanding the dynamics of interdependence.