9John Mearsheimer, The Tragedy of Great Power Politics , New York & London : W. W. Norton & Company, 2001, pp. 260 - 261. See also p. 355,p.24,pp. 26 - 27.
10Bruce Russett, H.Starr, and D. Kinsella, Worm Politics:A Metro for Choice ,New York:St. Martin's,2000,p. 13.