I think I've mentioned that nuclear proliferation is one likely outcome. Remember when the Berlin Wall fell, the heady days of believing in peace? That was when the US went full rogue, expanded into the power vacuum and started openly engaging in wars of choice, not of defense.* Then, for all to see, it openly blessed torture and extrajudicial remandering, in short, it brazenly stepped outside the law.
Of all mistakes, NATO going into Iraq and Afghanistan will be the ones we all most rue. Had it been a lone US, the sense that the world order has ended would be much less, our appraisal more aware for longer. NATO going outside Europe, seeming a self-authorizing world peace keeper, is Putin's one legitimate complaint, and the whole world lived through it as witness. I am afraid the heroes of the next war, whoever the winners, will write over our words with their own.
Normalized torture normalized the coliseum crowd, the hungry spectator wishing to see the empire's enemies paraded, humiliated, and brutally killed. It dehumanized the enemy, all enemies by extension. All the crowd needed then was someone to offer the best games, the best show, the finest rush of blood lust: Trump.
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*Going after bin Laden never had to be part of a war of invasion, and as it turned out, required only a special operation.