The original sin of 9/11

 "Advocates of the war on terror believed that nationalist chauvinism, which sometimes travels under the name “American exceptionalism,” could be stoked at a controlled burn to sustain American hegemony. Instead, and predictably, toxic ultranationalism burned out of control. Today, the greatest security threat to the United States comes not from any terrorist group, or from any great power, but from domestic political dysfunction. The election of Donald Trump as president was a product and accelerant of that dysfunction—but not its cause. The environment for his political rise was prepared over a decade and a half of xenophobic, messianic Washington warmongering, with roots going back into centuries of white supremacist politics."

https://www.foreignaffairs.com/articles/afghanistan/2020-10-22/us-foreign-policy-never-recovered-war-terror