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Everything changed in 1945. The invention of nuclear weapons sharply tilted the balance of the nationalist deal. After Hiroshima people no longer feared that nationalism would lead to mere war - they began fearing it would lead to nuclear war. Total annihilation has a way of sharpening people's minds, and thanks in no small measure to the atom bomb, the impossible happened and the nationalist genie was squeezed at least halfway back into its bottle. Just as the ancient villagers of the Nile Basin redirected some of their loyalty from local clans to a much bigger kingdom that was able to restrain the dangerous river, so in the nuclear age a global community gradually developed over and above the various nations, because only such a community could restrain the nuclear demon.