Basically what the title says. What if the Hashemites managed to keep their thrones in Iraq, Syria and Hejaz (and possibly take beat the Saudi Sultanate of Nejd)? How would this affect the middle east both in the short and long terms? Would this create a more stable region or would it be more chaotic due to the "foreignness" of the Monarchs vis a vie their subjects? Would these Kingdoms be sustainable long term (ie after the exit of Britain and France) or would they end like the OTL King of Iraq, butchered by a military coup? What would the effects be on pan-Arabism if the heart of the middle east is ruled by branches of the same dynasty? Furthermore, would, for lack of a better term, Hashemite pan-arabism undermine/weaken Ba'athism? Finally, would such a scenario weaken or strengthen the elements in Arab society that led to the rise of fundamental terrorism/ Islamist dictatorships? Please discuss!