1. Among the contributions from the Anglo-Saxon school of thought, see Halford Mackinder, ‘The Geographical Pivot of History’, Geographical Journal, vol. 23, no. 4 (April 1904), 421–44
2. Nicholas John Spykman, America’s Strategy in World Politics (New York: Harcourt, Brace, and Co., 1942), 19, 458–60
3. George F. Carter, Isaiah Bowman, ‘1878–1950’, Annals of the Association of American Geographers, vol. 40, no. 4, December 1950, 335–50.
4. Among the contributions on the issue of ‘Critical Geopolitics’, see John Agnew, Geopolitics: Revisioning World Politics, (London: Routledge, 2003); Gearóid Ó Tuathail, Simon Dalby and Paul Routledge, The Geopolitics Reader, Second edition, (London: Routledge, 2006)
5. Klaus Dodds and James Sidaway, ‘Locating Critical Geopolitics’, Society and Space (1994), 12 (5): 515–24