Assad's government is waging a war of extermination against anyone who dares to live outside his control.
The US's intervention has only bolstered Assad's grip: "US proxies" were ordered to stop fighting the SAA and only fight ISIS. That's why MaT is encircled at Al-Tanf.
let's not forget the US is in the same league of Turkey in terms of funding, arming, and training terrorists in Syria.
Additionally, at least 680,000 Syrians currently residing in Turkey are from NE Syria.