"In her introduction, Borradori contends that philosophy has an invaluable contribution to make to the understanding of terrorism. Just as the traumas produced by colonialism, totalitarianism, and the Holocaust wrote the history of the twentieth century, the history of the twenty-first century is already signed by global terrorism. Each dialogue here, accompanied by a critical essay, recognizes the magnitude of this upcoming challenge. Characteristically, Habermas's dialogue is dense, compact, and elegantly traditional. Derrida's, on the other hand, takes the reader on a long, winding, and unpredictable road. Yet unexpected agreements emerge between them: both have a deep suspicion of the concept of "terrorism" and both see the need for a transition from classical international law, premised on the model of nation-states, to a new cosmopolitan order based on continental alliances.".