G. R. Berridge is Emeritus Professor of International Relations at University of Leicester, UK. He has written many pieces on both the theory and practice of diplomacy, as author of Diplomacy: Theory and Practice, and as co-author of A Dictionary of Diplomacy (with Alan James), Diplomatic Theory from Machiavelli to Kissinger (with Maurice Keens-Soper and T. G. Otte). Berridge edited Diplomatic Classic: Selected Texts from Commynes to Vattel, and co-edited Diplomacy at the UN (with A. Jennings). He has also written books about specific historical cases, especially about British diplomacy in Turkey and South Africa.