Syrian–Turkish border clashes during the Syrian civil war

As the civil uprising phase of the Syrian civil war turned into an all-out civil war, the 911-kilometre-long (600 mi) Syria–Turkey border became the scene of minor military clashes between the Turkish Army and various factions in the war to the south. One of the most serious of these occurred on 3 October 2012, when an artillery shell fired from Syria by the Syrian Army killed five and injured at least ten Turkish citizens in the border town of Akçakale in Şanlıurfa Province, Turkey.

Source: Wikipedia — Syrian–Turkish border clashes during the Syrian civil war (CC BY-SA 4.0)