Turkey finished their buffer zone in Northern Syria. They are shelling the first YPG positions near the first town east of the Euphrates
http://syria.liveuamap.com/en/2017/13-december-turkish-artillery-shelling-ypg-positions-in-ame
Force are in motion among the coalition to contain Turkey and Iran. It will be seen if there is enough heavy weight among the Coalition to make it work.
Erdogan invaded near Kobani yesterday. And Lost a vehicle, 2 dead soldiers and some injured. They retreated. Kurds have advanced anti tank weapons of some kind. Don’t think they are US but are effective. I’ve seen videos of them using those weapons.