Stuart Elden is Professor of Political Geography at Durham University. He is the author of Terror and Territory: The Spatial Extent of Sovereignty and Understanding Henri Lefebvre: Theory and the Possible. Eduardo Mendieta is Professor of Philosophy at Stony Brook University, State University of New York. He is the author of Global Fragments: Globalizations, Latinamericanisms, and Critical Theory, also published by SUNY Press, and The Adventures of Transcendental Philosophy: Karl-Otto Apel's Semiotics and Discourse Ethics.