Eds. Didier Bigo...[et al]. This volume provides a critical assessment of the liberties of citizens and others in the European Union (EU) and the different ways in which they are affected by the proliferation of discourses, practices and norms of insecurity enacted in the name of the safety of the citizen and collective security. It analyzes from an interdisciplinary perspective the impacts of new techniques of surveillance and control of human movements over the liberty and security of the individual. The book offers a study of illiberal practices of liberal regimes in the field of security, and the relationship between the internal and external effects of these practices in an increasingly interconnected world order, as well as the effects in relation to the place of the EU in this world. The volume presents the final results of the CHALLENGE research project (The Changing Landscape of European Liberty and Security) - a five-year project funded by the Sixth Framework Programme of DG Research of the European Commission.