The old way was to raise an army, fight battles and enslave conquered peoples.
The new way is to buy off western politicians using oil money stolen from the western consumers and then send a massive invasion of muslim "migrants." Set up radical mosques to indoctrinate them and keep them separate from the host country's society and when you reach critical mass, start setting up no-go zones and demanding special privileges. Ratchet up terror attacks and random violence directed at jews, women, etc, so that it becomes the norm and people start factoring into their decisions whether it will offend some nutcase muslim. Push back against any criticism with whining about islamaphobia, discrimination, religious freedom, etc.