Rasmus Kleis Nielsen is a PhD student at Columbia University. He has written about social theory, political participation, and practices of communication in several journals. He edited Tidsskriftet Politik 2003-2005.Ole Dahl Rasmussen holds an MA in Political Science from University of Copenhagen. He was the editor of Politologiske Studier (now Tidsskriftet Politik) in 2002-2003.Ole Wæver is Professor of International Relations at the University of Copenhagen. His works includes (with Buzan) Regions and Powers (CUP, 2003) and (with Buzan & Wilde) Security: A New Framework of Analysis (Lynne Rienner, 1998).