The British Mandate of Palestine, after 400 years of Ottoman Turkish rule, did not want the headache and turned it over to the UN to come up with an international idea. Other the whole area would remain unstable.
Before T.E. Lawrence (Lawrence of Arabia) and the Arab Revolt against the Ottoman’s there was no such thing as Arab Nationalism. Iraq was in the vanguard of the movement towards Arab unity. Proponents of Pan-Arabism hoped to turn Iraq into the Prussia of the Middle East, into a nationalist prototype for the rest of the Arab world. Iraq became an independent State in 1932 and this set off an in-house war and the jockeying for power between indigenous Kurds, Assyrians, Persians, Azides, tribal conflicts witIh Arab Nationalists, which again sparked Sunni Shiite conflicts. It is 94 years later and what has changed?? Remember, the idea of Pan-Arabism was created in the 1900’s.