Afghanistan

So this one time, 19 goat farmers went to America, trained on plane simulators, and corrdinated the hijacking, and crashing, of 4 planes, causing the most deadly event on US soil since the 1906 San Francisco earthquake. We know it was goat farmers because the FBI found their passport immediately after the crash in the rubble despite the debris and chaos. Subsequently we got mad and the government retaliated by killing 900,000 more people.