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“Since 1945 there has been no Third World War. The development of nuclear weapons may prevent such a catastrophe. In the two World Wars words were one of a variety of weapons in the armory of the belligerent powers. In future, because of the advent of nuclear weapons, words may be the only arms which the super-powers can employ without risking annihilation.”
― Charles Roetter, The Art of Psychological Warfare, 1914-1945