US goverment have created terrorism, some of it they funded, the other part they just destroyed the country and created the instability that led to the rise of extremism
the evil doing of US goverment is such that satan himself sat to learn from them....
US is a bit more involved in Yemen war than that btw: https://apnews.com/4925f7f0fa654853bd6f2f57174179fe/US-interrogates-detainees-in-Yemen-prisons-rife-with-torture