Get our azzes out of their part of the world completely.
Tighten up the borders. Then if they still try to get in and F with us we send a drone over and have it "crash" near them. They open it up and "Whoa what is this stuff in here?" "Ebola? What's that?" Bye ISIS.
They will want to get as far away from one another as possible and they will stop cutting into people. I think that virus likes blood.