Northern Syria Buffer Zone

The Northern Syria Buffer Zone (also known as the Safe Zone, Peace Corridor, or Security Mechanism) was a temporary Syrian civil war demilitarized zone (DMZ) established on the Syrian side of the Syria–Turkey border in August 2019 to maintain security along the border and to dissuade a prospective Turkish invasion of the self-proclaimed Autonomous Administration of North and East Syria. The DMZ was administered by the Kurdish-led Syrian Democratic Forces (SDF) and their military councils and enforced by United States Armed Forces and Turkish Armed Forces personnel.

Source: Wikipedia — Northern Syria Buffer Zone (CC BY-SA 4.0)