The World after 9/11

How has the world changed fifteen years after 9/11? How have these changes affected the western hemisphere and emerging countries in particular?
It’s been said that the attacks marked the privatization of the “enemy.” The enemy ceased to be a state and became a group of individuals with a large degree of autonomy from any state. The diffuse nature of the enemy, and its complexity, gave rise to, or accelerated the use of, new techniques and methods employed by the military and intelligence apparatus. (Transnational drones, for instance, are highly emblematic of the post-9/11 world.)
On the American home front, after 9/11

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