Under American leadership, the mistakes made by Britain and France in the disposition of the Ottoman territories after WWI could be corrected for the good of all
During World War I, (May 1916), Britain and France entered the Sykes-Picot Agreement which was a secret convention, with the assent of imperial Russia, for the dismemberment of the Ottoman Empire.
They agreed that
Russia would acquire Armenian provinces and some Kurdish territory,
France would acquire Lebanon and much of present day Syria and
Great Britain would get southern Mesopotamia, including Bagdad and the Mediterranean ports of Haifa and Akko (Acre)
Between the French and British acquisitions there would be a confederation of Arab states or a single independent Arab state divided into British and French spheres of influence,
Alexandretta should be a free port and
Palestine, because of its holy places, should be under an international regime.