1 Bull, Hedley, The Anarchical Society: A Study of Order in World Politics (London: Macmillan, 1977), p. 13CrossRefGoogle Scholar .

2 Tuck, Richard, The Rights of War and Peace: Political Thought and the International Order from Grotius to Kant (Oxford: Oxford University Press, 1999), p. 9Google Scholar .

3 Bull, , Anarchical Society, pp. 36–37Google Scholar .

4 Jackson, Robert, Classical and Modern Thought on International Relations: From Anarchy to Cosmopolis (London: Palgrave, 2005), p. 75CrossRefGoogle Scholar . See also, Kingsbury, Benedict, ‘Sovereignty and Equality’, in Hurrell, Andrew and Woods, Ngaire (eds), Inequality, Globalization, and World Politics (Oxford: Oxford University Press, 1999)Google Scholar .

5 Kelsen, Hans, ‘The Principle of Sovereign Equality of States as a Basis for International Organization’, The Yale Law Journal, 53:2 (March 1944), p. 207CrossRefGoogle Scholar .

6 Kooijmans, Peter, The Doctrine of Legal Equality of States: An Inquiry into the Foundations of International Law (Leiden: A.W. Sijthoff, 1964), p. 8Google Scholar .

7 Jackson, Robert, The Global Covenant: Human Conduct in a World of States (Oxford: Oxford University Press, 2000), p. 22Google Scholar .

8 Kooijmans, , The Doctrine of Legal Equality, p. 8Google Scholar .

9 See Beitz, Charles, Political Theory and International Relations (Princeton: Princeton University Press, 1999)Google Scholar ; Rawls, John, The Law of Peoples (Cambridge Mass.: Harvard University Press, 1999)Google Scholar ; Linklater, Andrew, The Transformation of Political Community: Ethical Foundations of the Post-Westphalian Era (London: Polity Press, 1998)Google Scholar .

10 See Vincent, R. J., Human Rights and International Relations (Cambridge: Cambridge University Press, 1986)Google Scholar ; Roberts, Adam, Humanitarian Action in War: Aid, Protection and Impartiality in a Policy Vacuum, Adelphi Paper, 305 (Oxford: Oxford University Press, 1996)Google Scholar ; Wheeler, Nicholas, Saving Strangers: Humanitarian Intervention in International Society (Oxford: Oxford University Press, 2000)Google Scholar .

11 Not much has been written at length on the topic. Tuck's book The Rights of War and Peace (1999) and two major studies on the subject of legal equality of states, Kooijmans's The Doctrine of Legal Equality (1964) and Dickinson, Edwin, The Equality of States in International Law (Cambridge Mass.: Harvard University Press, 1920)CrossRefGoogle Scholar have been much relied on for the historical parts of the article. Simpson, Gerry, Great Powers and Outlaw States: Unequal Sovereigns in the International Legal Order (Cambridge: Cambridge University Press, 2004)CrossRefGoogle Scholar is a recent contribution showing how a pluralist society of states based on sovereign equality have accommodated great power politics.

12 Jean Dubabin, ‘The Reception and Interpretation of Aristotle's Politics’, in Kretzmann, Norman, Kenny, Anthony, Pinborg, Jan (eds), The Cambridge History of Later Medieval Philosophy: From the Rediscovery of Aristotle to the Disintegration of Scholasticism 100–1600 (Cambridge: Cambridge University Press, 1982)CrossRefGoogle Scholar .

13 Markus, R. A., ‘The Latin Fathers’, in Burns, J. H. (ed.), The Cambridge History of Medieval Political Thought c. 350–c. 1450 (Cambridge: Cambridge University Press, 1988), pp. 99, 121Google Scholar .

14 Aristotle, , Politics (Cambridge Mass.: Harvard University Press, 1932), p. 29Google Scholar .

15 Aquinas, , Selected Political Writings, A. P. D entrèves (Oxford: Basil Blackwell, 1948), p. 145Google Scholar .

16 Ibid., p. 129.

17 Ibid., p. 131.

18 Kingsbury, Benedict & Roberts, Adam, ‘Introduction: Grotian Thought in International Relations’, in Bull, Hedley, Kingsbury, Benedict, Roberts, Adam (eds), Hugo Grotius and International Relations (Oxford: Clarendon Press, 1990), p. 10Google Scholar .

19 Tuck, , Rights of War and Peace, p. 77Google Scholar ; Kooijmans, , Doctrine of Legal Equality, pp. 57–65Google Scholar .

20 Tuck, , Rights of War and Peace, p. 78Google Scholar .

21 Kooijmans, , Doctrine of Legal Equality, pp. 69–70Google Scholar ; Dickinson, , Equality of States, pp. 47–49Google Scholar .

22 Kooijmans, , Doctrine of Legal Equality, pp. 76–80Google Scholar ; Dickinson, , Equality of States, pp. 83–89Google Scholar .

23 Vattel, , Droit des gens, Préliminaires, § 18–19Google Scholar , quoted in Kooijmans, , Doctrine of Legal Equality, p. 84Google Scholar .

24 Tuck, , Rights of War and Peace, pp. 150–152Google Scholar .

25 Kooijmans, , Doctrine of Legal Equality, pp. 76–80Google Scholar .

26 Rousseau, Extrait du Projet de Paix Perpétuelle de Monsieur l’ Abbé de Saint-Pierre, 1756, quoted in Williams, Howard, Wright, Moorhead and Evans, Tony (eds), A Reader in International Relations and Political Theory (Buckingham: Open University Press, 1993), p. 102Google Scholar .

27 Ibid., pp. 102–3.

28 Kant, Immanuel, Perpetual Peace: A Philosophical Essay (Bristol: Thoemmes Press, 1992), p. 112Google Scholar .

29 Ibid., p. 128.

30 Ibid., p. 120.

31 Malcolm, Noel, Aspects of Hobbes (Oxford: Clarendon Press, 2002), pp. 148–156CrossRefGoogle Scholar .

32 Hobbes, Thomas, Leviathan (Oxford: Clarendon Press, 1909), p. 203, chap. 26Google Scholar .

33 Ibid., p. 223.

34 Bentham, Jeremy, The Principles of Law and Legislation (Darian: Haffner, 1970), pp. 326–327Google Scholar .

35 Some authors have discovered in Hobbes's writings evidence for some kind of an international society of commonwealths. See Malcolm, , Aspects of Hobbes pp. 432–456Google Scholar ; Forsyth, Murray, ‘Thomas Hobbes and the External Relations of States’, British Journal of International Studies, 5 (1979), pp. 196–209CrossRefGoogle Scholar ; Vincent, R. J., ‘The Hobbesian Tradition in Twentieth Century International Thought’, Millennium: Journal of International Studies, 10:2, 1981, pp. 91–101CrossRefGoogle Scholar .

36 Oppenheim, International Law, Vol. I (1905) pp. 19–20, 1905Google Scholar , quoted in Hicks, , ‘The Equality of States and the Hague Conference’, in The American Journal of International Law, 2 (1907), p. 534Google Scholar .

37 Jellinek, Georg, Allgemeine Staatslehre (Berlin: Verlag von Otto Häring, 1914), p. 481Google Scholar .

38 Hicks, ‘Equality of States’, pp. 530, 542–3.

39 Weinschel, Herbert, ‘The Doctrine of the Equality of States and its Recent Modifications’, The American Journal of International Law, 45 (1951), pp. 417–442CrossRefGoogle Scholar .

40 Hicks, ‘Equality of States’, p. 532.

41 The following criteria are suggested by Lorimer: (1) ‘The extent or size of the state, or the quantity of materials of which it is composed.’ (2) ‘The content or quality of the state, or of its materials.’ (3) ‘The form of the state, or the manner in which its materials are combined.’ (4) ‘The government of the state, or the manner in which its forces are brought into action.’ James Lorimer, The Institute of the Law of Nations. A Treatise of the Jural Relations of Separate Political Communities (1886), quoted in Hicks, ‘Equality of States’, p. 552.

42 Baker, P. J., ‘The Doctrine of Legal Equality of States’, The British Yearbook of International Law, 4 (1923), pp. 1–20, 3Google Scholar .

43 Ibid., p. 19.

44 Dickinson, , Equality of States, pp. 334–335Google Scholar .

45 Baker, ‘Doctrine of Legal Equality’, p. 3.

46 Dickinson, , Equality of States, p. 335Google Scholar .

47 Ibid., p. 336.

48 Kelsen, ‘Principle of Sovereign Equality’, p. 208.

49 Ibid., p. 210.

50 MacGormick, Neil, ‘Law’, in Miller, David (ed.), The Blackwell Encyclopedia of Political Thought (Oxford: Basil Blackwell, 1991), p. 269Google Scholar .

51 Kelsen, ‘Principle of Sovereign Equality’, p. 209.

52 Ibid., p. 209. According to Kelsen, this observation has fostered attempts to specify the content of the principle, generally leading to the idea that the principle of equality of states is safeguard for the autonomy of states viewing them as legal subjects of international law.

53 Bull, , Anarchical Society, pp. 36–37Google Scholar .

54 Hart, H. L. A., The Concept of Law, 2nd edition (Oxford: Clarendon Press, 1990), pp. 94–95Google Scholar .

55 Ibid., p. 236.

56 Bull, , Anarchical Society, pp. 139–140Google Scholar .

57 Ibid., pp. 131–2. See also Hjorth, Ronnie, ‘Hedley Bull's Paradox of the Balance of Power: A Philosophical Inquiry’, Review of International Studies, 33 (2007), pp. 606–609CrossRefGoogle Scholar ; Wilson, Peter, ‘The English School's Approach to International Law’, in Navari, Cornelia (ed.), Theorising International Society: English School Methods (London: Palgrave, 2009)Google Scholar .

58 Bull, , Anarchical Society, pp. 140–141Google Scholar .

59 Ibid., pp. 36–7.

60 Hjorth, ‘Hedley Bull's Paradox’; K. J. Holsti, ‘Theorising the Causes of Order: Hedley Bull's The Anarchical Society, in Navari, Theorising International Society.

61 Singer, Peter, Practical Ethics 2nd edition (Cambridge: Cambridge University Press, 1993), pp. 23–26Google Scholar .

62 Kelsen, ‘Principle of Sovereign Equality’, p. 209.

63 Vincent, R. J., Nonintervention and International Order (Princeton: Princeton University Press, 1974), p. 41Google Scholar .

64 Jackson, Robert, Quasi-States: Sovereignty, International Relations and the Third World (Cambridge: Cambridge University Press, 1990)Google Scholar .

65 Rawls, , Law of Peoples, pp. 23–24Google Scholar .

66 Ibid., p. 59.

67 Rawls mentions the similarities between his theory and Christian natural law theory, such as thomism, and he even argues that his own theory can be supported by natural law theory (p. 104). It is striking that the type of ideal political community envisaged by Thomas might perhaps have been accepted by Rawls as a ‘well-ordered’ people.

68 Rawls, John, Political Liberalism (New York: Columbia University Press, 1993), pp. 89–99Google Scholar .

69 Tan, Kok-Chor, Justice Without Borders: Cosmopolitanism, Nationalism and Patriotism (Cambridge: Cambridge University Press, 2004), p. 73CrossRefGoogle Scholar .

70 It is recognised by Charles Beitz in the new afterword to the second edition of Political Theory and International Relations (1999), Rawls's The Law of Peoples and R. J. Vincent's seminal work Human Rights and International Relations (1986), a solidarist English School classic, are at the heart of a paradigm Beitz labels ‘social liberalism’, and according to which ‘[…] state-level societies have the primary responsibility for the well-being of their people while the international community serves to establish and maintain background conditions in which just domestic societies can develop and flourish’ (p. 215). For some critical remarks concerning the Rawls's The Law of People and the classical international society approach, see Jackson, , Classical and Modern Theories, pp. 157–179Google Scholar .

71 Gerry Simpson discriminates between two types of hierarchy within international society: legalised hegemony and liberal antipluralism. The former is associated with constitutional privileges and is relevant, for example, in the application of legal equality of states to UN Security Council (see above), and the latter to the kind of moral hierarchy discussed by (for example) Rawls, but also the ‘nonliberal’ antipluralism of (for example) Aquinas. Simpson, , Great Powers, pp. 67–83Google Scholar .

72 Mayall, James, World Politics: Progress and its Limits (London: Polity Press, 2000), p. 14Google Scholar ; Wheeler, Nicholas, Saving Strangers, p. 11Google Scholar ; Bellamy, Alex (ed.), International Society and its Critics (Oxford: Oxford University Press, 2005), pp. 9–11Google Scholar .

73 Williams, John, ‘Territorial Borders, Toleration and the English School’, Review of International Studies, 28 (2002), pp. 740–741CrossRefGoogle Scholar .

74 Keene, Eward, Beyond the Anarchical Society: Grotius, Colonialism and Order in World Politics (Cambridge: Cambridge University Press, 2002)CrossRefGoogle Scholar .

75 Wheeler, , Saving Strangers, pp. 12–13Google Scholar ; Shue, Henry, ‘Limiting Sovereignty’, in Welsh, Jennifer (ed.), Humanitarian Intervention and International Relations (Oxford: Oxford University Press, 2004)Google Scholar .

76 Linklater, Andrew, Critical Theory and World Politics: Citizenship, Sovereignty and Humanity (London: Routledge, 2007)Google Scholar .

77 Dunne, Tim, Inventing International Society: A History of the English School (London: Macmillan, 1998), p. 190CrossRefGoogle Scholar .