Barry Buzan is Montague Burton Emeritus Professor in the Department of International Relations, London School of Economics (LSE), a Senior Fellow at the IDEAS, LSE and Fellow of the British Academy. Among his books are, with Richard Little, International Systems in World History (2000); with Ole Wæver, Regions and Powers (2003); from International to World Society? (2004); and with Lene Hansen, The Evolution of International Security Studies (2009).