But the ultimate enabler of countries like Saudi Arabia, Iran is the US/West by 1. making them rich through oil-buying (some of the money goes to fund terrorism

But the ultimate enabler of countries like Saudi Arabia, Iran is the US/West by 1. making them rich through oil-buying (some of the money goes to fund terrorism) and 2. selling them arms. So the West is to blame indirectly (and directly), too.