Will the Turkish army be deployed in Syria?

Unless Turkey is directly attacked by Syrian forces, it is not very likely that the Turkish army will be deployed in Syria.

I'm not talking about a few shells falling on the Turkish side of the border or shots fired at Turkish patrols or border stations, or perhaps even the incidental shooting down of planes; after all, there are already set and announced rules of engagement for such incursions. The Turkish military responds to such incidents immediately, as in the cases of the last few days. The military has been careful to make the point that all artillery fired on positions across the Turkish border of the People's Protection Units (YPG), the military wing of the Syrian Kurdish Democratic Union Party (PYD), have been responses to PYD incursions. But there has been no step back from Ankara on opening "reciprocal" fire on Syrian or PYD positions, despite calls from Russia, the EU, and especially the U.S., which remains Turkey's major military ally. In fact, the Turkish Foreign Ministry confirmed another round of firing yesterday on Feb. 15. The ministry also said it was "shocked" by the U.S. reaction to Turkey's firing on the PYD. The PYD is the Syrian sister of the outlawed Kurdistan Workers' Party (PKK), which is currently fighting against the Turkish government and which is also on the U.S.'s official list of terrorist organizations.

During a visit to Ukraine (with a most interesting timing when the tension with Russia is rising), Turkish Prime Minister Ahmet Davuto?lu said on Feb. 15 that Turkey would continue its operations until the YPG withdrew from the strategic town of Azaz and moved away from the corridor where assistance is conveyed by a number of countries to Syrian opposition forces in and around Aleppo via Turkey. "The YPG is an...