Turkish artillery has returned fire "in kind" into Syria, military sources told Reuters on Tuesday, marking the fourth straight day of shelling by the Turkish military.
Turkey on Monday warned Kurdish militia fighters in northern Syria they would face the "harshest reaction" if they tried to capture a town near the Turkish border.
Turkey also accused Russia of an “obvious war crime” after missile attacks in northern Syria killed scores of people, and warned Kurdish militia fighters there they would face the “harshest reaction” if they tried to capture a town near the Turkish border.
An offensive supported by Russian bombing and Iranian-backed Shiite militias has brought the Syrian army to within 25 km of Turkey’s frontier. The Kurdish YPG militia - which Turkey regards as a hostile insurgent force - has exploited the situation, seizing ground from Syrian rebels to extend its presence along the border.