We know, comrades, that our enemies will say that we are appealing to the memory of Genghis Khan and to the memory of the great conquering Caliphs of Islam... when the capitalists of Europe say that a new wave of barbarism threatens... we answer them: Long live the Red East, which together with the workers of Europe will create a new civilization under the banner of Communism! (firstthings.com)
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Though they recognized Abbasid caliphs as nominal heads of state, the real power was in their hands. (religion-online.org)