This does not really pertain to Turkey, but I really do think Gully is right here (and I have for some time):
At this point I wonder if 'permanently occupy the region' is the only 'solution' here.
I recall a thread where someone (I think it was also Gully) posted an ethnic map of the Austro-Hungarian Empire and asked how one would have best "chopped it up"-- and this map didn't even
try to deal with Bosniaks, Serbs, and Croats, lumping them together. The region-- if not all of West Asia, then at least the Levant (but probably the whole thing, given the war in Yemen for starters)-- can hardly be divided in a manner that will prove satisfactory, especially considering the fluid salience of group distinctions.
Take Yemen; not very long ago its Shias and Sunnis, whose doctrinal differences were less pronounced than was the case elsewhere, were able to live alongside each other in such concord that they even worshipped at each others' mosques. Now they're fighting a full-scale civil war. At the same time, for all the talk against it, events have done little to indicate that dichotomy of "Islamists or autocrats" is inaccurate-- just look at the Egyptian election in 2012 when those were
literally the two choices. There has been virtually nothing (aside from Tunisia, if that) to suggest that people in the region will somehow manage to embrace democracy and get along with one another.
There seems to be two options-- either accept "irrational" borders and force people within them to "get along", or return to the multinational empires of old to do the same. Both of which would require direct foreign long-term intervention. Nothing else seems to work.