Who funded terrorists in.
https://en.wikipedia.org/wiki/United...ored_terrorism
Stones and glass houses come to mind.
However, Muslims have been killing each other before Mohammed was born. He was also good at waging war on other tribes. As soon as he died Muslims took sides and carried on killing each other.
Which is why we need to get off burning oil and get out of the ME except for buying what little we need. If it wasn't there, it would just be tribal skirmishes.