The biggest mistake in the partition of the Ottoman Empire is to spread the Kurdish lands between Turkey, Syria and Iraq.

That territory outlined for the Kurds was going to be land locked and only cover like 25% of their ethnic territory. It may have well all been put into Turkey adding wealth there and treated less as a backwater.

Then with Turkey joining NATO in 1952 the Kurdistan region would be counted as an ally though Soviet Union would have funded Kurdish revolutionaries in the autonomous region. As an independent state Kurdistan might have been outright annexed by the end of World War II.