Economic Power in Anglo-South African Diplomacy: Simonstown, Sharpeville and After (Macmillan, London, 1981), 225pp [doctoral thesis] ISBN 0-333-16592-0 Diplomacy at the UN, ed with A. Jennings (Macmillan, London, 1985) repr. 1986, 1987, 227pp. ISBN 0-333-36019-1
The Politics of the South Africa Run: European Shipping and Pretoria (Clarendon Press, Oxford, 1987), 254pp. ISBN 0-19-827484 -X. [more][buy this book] Return to the UN: United Nations diplomacy in regional conflicts (Macmillan, 1991), 188pp. ISBN 0-333-52300-8/0-333-52301-6 Pbk. [more][buy this book]
South Africa, the Colonial Powers and ‘African Defence’: The rise and fall of the white entente, 1948-60 (Macmillan, London, 1992), 234pp. ISBN 0-333-56351-4 [more][buy this book] An Introduction to International Relations (with Derek Heater) (Harvester Press, Hemel Hempstead, 1993), 218pp. ISBN 0-7450-1090-3/0-7450-1091-1 Pbk
Talking to the Enemy: How states without ‘diplomatic relations’ communicate (Macmillan, London, 1994), 178pp, ISBN 0-333-55655-0 (St. Martin’s Press, New York, 1994), ISBN 0-312-12152-0 [more][buy this book] International Politics: States, power and conflict since 1945, 3rd edn (Prentice Hall/Harvester Wheatsheaf, 1997), 244pp. ISBN 0-13-130327-1 Pbk [more][buy this book]
Guicciardini’s Ricordi: The Counsels and Reflections of Francesco Guicciardini (Allandale Online Publishing, Leicester, 2000) ISBN 1-903328-02-0 (Acrobat) Diplomatic Classics: Selected texts from Commynes to Vattel (Palgrave-Macmillan, Basingstoke and New York, November 2004) [buy this book]
Diplomatic Theory from Machiavelli to Kissinger(with Maurice Keens-Soper and T. G. Otte), (Palgrave, Basingstoke, 2001) ISBN 0-333-75365-8 hb; 0-333-75366-6 pb [buy this book] Machiavelli’s Legations (Allandale Online Publishing, Leicester, 2001) ISBN 1-903328-22-5 (Acrobat) and 1-903328-23-3 (MS Reader)
Gerald Fitzmaurice (1865-1939), Chief Dragoman of the British Embassy in Turkey (Martinus Nijhoff: Leiden, 2007) ISBN 978 90 04 16035 4 [more][buy this book] [read review] Tilkidom and the Ottoman Empire: The Letters of Gerald Fitzmaurice to George Lloyd, 1906-15 (The Isis Press: Istanbul, 2008) [more]
British Diplomacy in Turkey, 1583 to the present: A study in the evolution of the resident embassy (Martinus Nijhoff: Leiden, 2009) [more] [read review] Embassies in Armed Conflict (Continuum: New York and London, 2012) [more] [Read review] [Buy this book]
The Counter-Revolution in Diplomacy, and Other Essays (Palgrave Macmillan: Basingstoke, 2011) [more] The Palgrave Macmillan Dictionary of Diplomacy, Third Edition (with Lorna Lloyd) (Palgrave Macmillan: Basingstoke, 2011) [more] [Buy this book]
A Diplomatic Whistleblower in the Victorian Era: The life and writings of E. C. Grenville Murray, 2nd ed (rev.), printed (Isis Press: Istanbul, 2017) Diplomacy, Satire and the Victorians: The Life and Writings of E. C. Grenville-Murray, 2nd edn (rev.), 2018. Available on ISSUU here.
The Diplomacy of Ancient Greece: A Short Introduction (DiploFoundation: 2018) Available on ISSUU here. Diplomacy and Secret Service: A Short Introduction (DiploFoundation: 2019) Available on ISSUU here.
British Heads of Mission at Constantinople, 1583–1922 (2020) Available here. Diplomacy: Theory and Practice, 6th edn (Palgrave Macmillan/Springer Nature, 2022)