The Saudis, UAE, and other ME Nations can act if they want to stop ISIS. But, they don’t want to spill their own blood when they can wait and let the US spill theirs.
Egypt and Jordan are acting. The US won’t resupply Jordan. That’s money, not blood. There’s an opportunity the US is losing in the region for lack of leadership. Witness Iraq, for the cost of a few drones, artillery and I presume some advisors, they’ll be taking Tikrit. Mosul next. Paid for with Arab blood, Iranian supplies and training.
The collective force can be code named GI Achmed or some other male name.