4 points
Turkey is explicitly backing the Syrian Natonal Army (not the actual Syrian Army or the Free Syrian Army - splitters!) but it’s understood that they were also backing HTS to some extent (although not openly as they are still a proscribed organisation in a lot of western countries) and it was Turkey that greenlit the recent big push as their negotiations with Assad were going nowhere. So, while the West have been scrambling for some influence in Syria (and Russia and Iran have lost their’s), Turkey has been left as the main puller of strings in Syria. Their main concern is the Kurds and they were attacking them within a day or two of Assad falling.