While it is premature to enter a final verdict on the impact of the events of 11 September 2001 on the political and constitutional order of liberal democracies, one point remains clear: the events of 9/11 have ushered in a vigorous and highly contested academic debate on issues relating to the state of emergencies and the rule of law. What is more, this is far from a mere academic debate. Practices such as torture that were once beyond the pale have now become matters of public concern and debate. Indeed, that these items are now on the public agenda is emblematic of the fact that the events of 9/11 have been influential in transforming our thinking about some fundamental constitutional principles and the institutional edifice of liberal d...