Barry Buzan is a Senior Fellow at LSE IDEAS, Emeritus Professor in the London School of Economics Department of International Relations and a Fellow of the British Academy. His books include International Systems in World History: Remaking the Study of International Relations (2000, with Richard Little); Regions and Powers: The Structure of International Security (2003, with Ole Wæver); From International to World Society? English School Theory and the Social Structure of Globalisation (Cambridge University Press, 2004); Does China Matter? (2004, coedited with Rosemary Foot); The United States and the Great Powers: World Politics in the Twenty-First Century (2004); International Society and the Middle East: English School Theory at the Regional Level (2009, coedited with Ana Gonzalez-Pelaez); and Non-Western International Relations Theory (2010, coedited with Amitav Acharya).

Yongjin Zhang is Professor of International Politics at the University of Bristol. His main publications include China in the International System, 1918–1920: The Middle Kingdom at the Periphery (1991); China in International Society Since 1949: Alienation and Beyond (1998); China’s Emerging Global Businesses: Political Economy and Institutional Investigations (2003); Power and Responsibility in Chinese Foreign Policy (2001 and 2014, coedited with Greg Austin); and International Orders in the Early Modern World (2014, coedited with Shogo Suzuki and Joel Quirk). His articles have appeared in European Journal of International Relations, Review of International Studies, Australian Journal of International Affairs, Chinese Journal of International Politics, China Journal, Journal of Contemporary China, Asian Perspective, Development and Change and, most recently, International Affairs, among others. He is the winner of the BISA (British International Studies Association) prize for the best article published in Review of International Studies in 1991.