It is clear now that the scheming and maneuvering of the US, Israel, Saudi Arabia and Turkey have finally weakened the Syrian government enough to being about its downfall in the not too far distant future.
The impending emergence of Iran from international isolation reduces the willingness of the Iranian government to endlessly, and expensively continue to support the Syrian government. The IRGC may wish to fight on forever in Syria but the government and the Ayatollahs probably do not.(…)
Such a partition will require considerable ethno-sectarian cleansing and transfer of populations from areas to areas, something like the Ataturk/Venizelos transfer of the 20s.(…) I doubt it, and then the butchery will really begin.