Assume, by one or more PoD to be devised, occurring as late as possible, that all of the following events happen:
* During the 1948-49 Arab-Israeli War, Israel wins a total military victory, leading to its annexation of the sum of OTL Israel and West Bank. Transjordan remains an Arab state, Gaza may or may not turn out like OTL, or be annexed by Israel as well.
This might be the effect of a greater amount of European Jews remaining alive during WWII and emigrating to the Zionist homeland, or extra-European ones emigrating to Palestine in greater numbers (e.g. the USSR allows Soviet Jews to emigrate), or any number of military butterflies.
* As a result of the conflict, the vast majority of the Arab population in the West Bank flees (or is expelled, depending on your preferred political poison) to Arab lands, just like the one in OTL Israel, so that by modern times, the demographic character of Greater Israel is as predominantly Jewish as IOTL, with Arab citizens making up no more than 20% of the population.
* Either a) The United Arab Republic
union of Egypt and Syria successfully endures and it is extended to Iraq (as it was planned) OR b) Pan-Arabism takes a different but just as successful path, which leads to the formation of a Egypt-Lybia-Sudan
union and a Syria-Iraq
union.
* The UK does not
intervene to support Kuwaiti independence when the UAR or Syria-Iraq claims it as a part of Iraq immediately after the end of British colonial rule, so Kuwait becomes a part of the UAR/Syria-Iraq.
* Palestinian revolutionary groups
overthrow the Hashemite monarchy in Jordan and turn Transjordan into the Palestinian homeland.
Which kind of PoDs and butterflies do you deem necessary and sufficient to make this sum of events turn out, and which consequences would they have on the course of Cold War and Post-Cold War Middle East history ?