The military forces of the revolutionary adversary are diffuse. One is never sure whether one has destroyed them unless one is ready to destroy a large portion of the population, and this usually conflicts with the political aim of the war and hence also violates a fundamental Clausewitzian principle

Anatol Rapoport (1968), as quoted in: William John Thomas Mitchel (2011) Cloning Terror: The War of Images, 9/11 to the Present. p. viii