1. See, inter alia, Sofer, “Old and new diplomacy: a debate revisited,” Shaun Riordan, The new diplomacy (Cambridge: Polity, 2002).
2. Harold Nicolson, Diplomacy (London: Oxford University Press, 1963). Nicolson, in fact, takes his definition directly from the Oxford English Dictionary where it defined as “the management of international relations by negotiation; the method by which these relations are adjusted and managed by ambassadors and envoys; the business or art of the diplomatist.” Ibid., p. 15.
3. Ernest Satow, Guide to diplomatic practice, edited by Sir Nevile Bland (London: Longmans, Green, 1957), p. 1.
4. See François de Callières, The art of diplomacy, edited by H. M. A. Keens-Soper and Karl W. Schweizer (Leicester: Leicester University Press, 1983) and
5. Maurice Keens-Soper, “François de Callières and diplomatic theory,” Historical Journal, Vol. 16, No. 3, 1973, pp. 485–508.