Turkish planes were trying to enter Syrian airspace in the northern province of Aleppo, but turned around after warnings from the Syrian and Russian military, RIA Novosti reported.
The Turkish army on August 24 started the operation "The Euphrates Shield" against the terrorist group "Islamic State."
In Damascus, the presence of the Turkish army is considered a violation of the sovereignty of the country, which would entail a conflict escalation. The Syrian army command earlier vowed to resist the "invaders."