“War most often promotes the internal unity of each state involved. The state plagued by internal strife may then, instead of waiting for the accidental attack, seek the war that will bring internal peace.”
Source: Man, the State, and War (1959), Chapter IV, The Second Image, p. 81
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Kenneth N. Waltz 26
American political scientist and international relations th… 1924–2013Related quotes

2013
Source: United Nations General Assembly - Promotion of a democratic and equitable international order http://www.ohchr.org/Documents/Issues/IntOrder/A-68-284_en.pdf.

2018, Report submitted to the UN Human Rights Council

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2010s, Our revolution's doing what Saleh can't – uniting Yemen (2011)

United Nations General Assembly - Promotion of a democratic and equitable international order http://www.ohchr.org/Documents/Issues/IntOrder/A-68-284_en.pdf.
2013

Source: Understanding International Conflicts: An Introduction to Theory and History (6th ed., 2006), Chapter 2, Origins of the Great Twentieth Century Conflicts, p. 34.
Kenneth Boulding (1975), International Systems: Peace, Conflict Resolution, and Politics. p. 375 as cited in: Bjørn Møller, Håkan Wiberg (1994) Non-offensive defence for the twenty-first century. p. 36
1970s
Man's Rise to Civilization (1968)
Context: For a tribe to endure, it must find some way to achieve internal unity—and that way usually is external strife. The tribe exists at all times in a state of mobilization for war against its neighbors. The slightest incident, or often merely a desire to increase prestige, is enough to set off a skirmish, and in such circumstances hatred against external enemies must be unremitting.<!-- p. 97