[Mariner]

Russia has announced that they will resist any, any foreign ground force in Syria.

Would Turkey be so dumb as to directly engage Russian forces without NATO cover?

The Russian air force would blow them to hell in Syria. And, every escalation Turkey undertakes digs their smoldering hole a few feet deeper.

The Turkish military doesn't have the ability to establish air superiority over their armor and infantry, making them sitting ducks.

[laplata]

This is going to be a bad year in many ways.

[amorphous]

I'm pretty sure Turkey's forces will coordinate with SA/Qatar forces, along with US and other support, if not outright boots on ground.

This will force Russia to consider using nuclear weapons to counter such a massive invasion of Syria - something Putin has already warned about.

[buwaya]

Don’t be so sure re air superiority.
The Turks outnumber the Russian airforce in Syria by 7-10:1
They have their own SAM systems that can keep Russian aircraft off.
And I doubt the Russian SAM system can remain up after suppression. The Turks have a lot of firepower.

[pierrem15]

You severely overestimate Russian capabilities: their new airbase is almost within artillery range of the Turkish border, and Turkey has good air defense systems.