That has been their reported strategy for months:
https://www.the-american-interest.com/2017/01/27/the-danger-of-syrian-safe-zones/
And here is a more explicit and detailed elucidation of the plan from January, 2016—with notes as to the effort having been started decades earlier:
30,000 U.S. troops? Yikes. DJT needs to get other countries to do the safe zone guarding. We’ve done more than our fair share. We’ll see how it turns out.
Bottom line for me is I do not want these people in our country, legal or illegal, except Christians. They don’t pose a threat like the muzzies do. But even then, muzzies would lie and say they are Christians just to gain entry. Safe zones there are much safer for us here, IMO.