It’s a Ploy by Russia. Wait and watch.
Now both US and Russia wants to see a weaker Europe and this migrant flooding will help them. (Both US and Russia love Merkel as she is screwing Europe by bringing Muslim Migrants which UK learnt recently from own such immigration)
At the end Russia will be a winner with Europe not supporting Turkey and Syria not wanting rebel Sunnis back inside Syria. So Europe will become weaker, Assad will have limited Sunnis who are ok with him, Russia will save the Chrisitan sites and Its Base.
Then after this scenario Russia will hit hard all the remaining Terrorist and Turkish Troops in Syria.
P.S Just Russian Naval forces is enough to bring Down Turkey in 20 Hours (Less than 1 Day). But Russia needs Airpower in Syria for Defence of its assets simultaneously. So Navy for offence and Airforce for defence. All this with conventional weapons but if you bring a single nuclear armed Russian Submarine then any country will shiver including US.
Let’s put things in the right perspective. When an army gets bombed in some else territory is not an attack , but a defensive response. What happen if Syrian troops enter Turkey and Turkish jet attack the invader? What we will call that? Olive branch ?banana branch ? . I do agree Turkey needs a buffer zone to protect their people . Byzantines Allow the Slavs to move by north Balkan ,to buffer from the aggressive Germanic tribes . Germans nice now good economy plenty food ,that time was different ,they were land pirates. Now Turkey wants to have a buffer ,good decision, but do it in your own territory,not your neighbor, because that move will cause war . No one wants to donate 30 miles by …. . Now Turkey sends immigrants to Greece with rubber boats . I’m very sure the know and encourage that practice ,than should Greece invade Anatolia and create a 40 miles buffer zone ? I don’t think Turkey will agree on that . Turkey has problems with so called terrorist, create a buffer zone inside Turkish territory. So is no fighting in Syria ,and than line up all the Syrians and transfer into Syria . No problem for greece or turkey or the EU . And if some one attack turkey than nato should help with troops . It’s easier to seal the Turkish land borders than the Aegean Sea . But who say they do things right today ,many smart politicians ,menu stupid decisions. I hope better days for Turkey