Philip E. Steinberg is Professor of Political Geography at the University of Durham. He was formerly Professor of Geography at Florida State University and Marie Curie Fellow at Royal Holloway, University of London. Jeremy Tasch is Assistant Professor, Department of Geography and Environmental Planning, Towson University, Baltimore, USA. His research interests include resource development in Central Asia and the Russian Far East, Arctic sovereignty claims in the context of climate change, and the social theory of global environmental issues. Hannes Gerhardt is Assistant Professor, Department of Geosciences, University of West Georgia. His research interests include issues of sovereignty, territorialization, global governmentality, and the cultural dimensions of critical geopolitics. Adam Keul is Assistant Professor, Department of Geography, University of Connecticut. He specialises in resource geography. Elizabeth Nyman is Assistant Professor, Department of Political Science, University of Louisiana at Lafayette. She specialises in international relations.