Antony Best is Associate Professor of International History at the London School of Economics, UK. His most recent single-authored book is British Intelligence and the Japanese Challenge in Asia, 1914-1941 (Palgrave 2002), and he is one of the co-authors of International History of the Twentieth Century and Beyond, 3rd edition (2015). He is currently completing a monograph on British interactions with Japan between 1854 and 1922.Gaynor Johnson is Professor of International History at the University of Kent, UK. Her most recent publications relate to the history and operation of the British Foreign Office and the use of prosopography as a research tool for international historians. She has also published widely on twentieth-century British foreign policy. Her most recent book is Politician and Internationalist: Lord Robert Cecil (2013). She is currently writing two books; one on British ambassadors to Paris during the era between the two world wars, and an institutional history of the Foreign Office.