Warfare had to be re-propagandised in the 20th Century, particularly in the western world, as a moral crusade. Mass democracy determined that leaders needed to present war as a manichean struggle between freedom and tyranny. The end of the Tsarist regime and the intervention of a liberal American president in the First World War was an ideal opportunity to re-invent conflict as moral crusade in the defence of freedom. The arguments that British, American and other NATO leaders present in the 21s
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