Reply #4: Google's your friend. . .

[Journeyman]

http://www.google.com/search?client=safari&rls=en&q=o+Two+Countries+with+McDonald's+Have+Ever+Gone+to+War&ie=UTF-8&oe=UTF-8


In his book, The Lexus and the Olive Tree, Thomas L. Friedman proposed "The Golden Arches Theory of Conflict Prevention," observing that no two countries with a McDonald's franchise had ever gone to war with one another, a version of the democratic peace theory. Shortly after the book was published, the NATO bombing of Serbia proved the theory wrong, though in a later edition Friedman argued that this exception proved the rule: the war ended quickly, he argued, partly because the Serbian population did not want to lose their place in a global system "symbolised by McDonald's" (Friedman 2000: 252–253). It should be noted that Friedman framed this theory in terms of McDonald's Golden Arches "with tongue slightly in cheek" (Friedman 2005). Recently, Friedman has updated the theory with the Dell Theory of Conflict Prevention (Friedman 2005). In 2006 McDonald's hosting nations Israel and Lebanon were involved in a war which could also be considered evidence against the Golden Arches theory.

http://en.wikipedia.org/wiki/Golden_Arches