Islam originated with Muhammad and a band of brigands numbering in the dozens. It compelled the submission of millions of pagan, Jewish and Christian parents (who presumably loved their children) in North Africa, Arabia, Persia and Central Asia, all of them part of advanced (for that time) civilizations that pre-existed Islam by at least hundreds of years. If they ever do catch up technologically, we are in big trouble.
I know the history of Islamic aggression. It includes losing most of what they gained in their aggressive acts, and it will again. They have zero chance. History is chock full of barbarians. None of them last. They do, however, have a history of hurting significant numbers of people, before their inevitable demise.