Bibliographic Essay 567
Rome: A Realist View,” 31 Int’l Hist. Rev. 253– 67 (2009). On Cicero’s contribution to
international law, see Johnston, Historical Foundations, 217– 24.
On cosmopolitan thought and ideals in ancient Greece, see H. C. Baldry, Th e Unity
of Mankind in Greek Th ought (Cambridge University Press, 1965). On natural law in
Roman legal thought, see Barry Nicholas, An Introduction to Roman Law (Clarendon
Press, 1962), 54– 59. On the Roman- law ius gentium, see Phillipson, International Law
and Custom, vol. 1, 70– 81. For more recent treatments, see Peter Haggenmacher, Gro-
tius et la doctrine de la guerre juste (Presses universitaires de France, 1983), 313– 20;
and Peter Stein, “Roman Law,” in J. H. Burns (ed.), Th e Cambridge History of Medieval
Po liti cal Th ought c. 350– c. 1450, 37– 47 (Cambridge University Press, 1988).
- Keeping Kings in Check
On international relations generally in the Middle Ages, see François L. Ganshof, Th e
Middle Ages: A History of International Relations (trans. by Rémy Inglis Hall; Harper
and Row, 1970), which contains much information; and, more briefl y, Ada m Watson,
Th e Evolution of International Society (Routledge, 1992), 138– 51. Also containing use-
ful information, though not specifi cally directed to international law, is Bernard
Guenée, States and Rulers in Later Medieval Eu rope (trans. by Julet Vale; Basil Black-
well, 1985).
On international law in par tic u lar, see Douglas M. Johnston, Th e Historical Foun-
dations of World Order: Th e Tower and the Arena (Martinus Nijhoff , 2008), 243– 319;
Heinrich Kipp, Völkerordnung und Völkerrecht im Mittelalter (Deutsche Glocke,
1950); and John Eppstein, Catholic Tradition of the Law of Nations (Burns Oates and
Washbourne, 1935). On state practice in the realm of international law, see Dominque
Gaurier, Histoire du droit international: Auteurs, doctrines et développement de
l’Antiquité à l’aube de la période contemporaine (Presses universitaires de Rennes,
2005), 85– 133. On international relations ideas, see Frank M. Russell, Th eories of In-
ternational Relations (D. Appleton- Century, 1936), 90– 115. For a detailed study of the
Carolingian period, see Heinhard Steiger, Die Ordnung der Welt: Eine Völkerrechtsge-
schichte des karolingischen Zeitalters (741 bis 840) (Böhlau, 2010).
On the various ideas about the ius gentium in the Middle Ages, see the masterful
discussion in Peter Haggenmacher, Grotius et la doctrine de la guerre juste (Presses
universitaires de France, 1983), 311– 58. For a fi ne short account in En glish, see Don-
ald R. Kelley, Th e Human Mea sure: Social Th ought in the Western Legal Tradition
(Harvard University Press, 1990), 121– 27.
On just- war doctrine, the best general account is Frederick H. Russell, Th e Just War
in the Middle Ages (Cambridge University Press, 1975). For an excellent short exposi-
tion, see Jonathan Barnes, “Th e Just War,” in N. Kretzmann, A. Kenny, and J. Pinborg
(ed s.), Th e Cambridge History of Later Medieval Philosophy, 771– 84 (Cambridge Uni-
versity Press, 1982). See also Stephen C. Neff , War and the Law of Nations: A General
History (Cambridge University Press, 2005), 45– 68; and Kipp, Völkerordnung und