A two-fer: run off the Kurds and also get the land.
Plus he “won” a battle to show for the upcoming elections...
Double-plus: he has the two adjacent Sytian provinces full of the terrorists he supported against Assad.
Well, loss of territory is a frequent outcome of civil wars.
Can you imagine if the international community flapped their collective gums about the Kurds, whose issues are at least real rather than concocted, rather than the so-called Palestinians?