In this photo from the Syrian official news agency, people welcome Syrian troops entering the town of Ain Issa on Monday. (SANA/AP)
A Turkish-backed Syrian fighter peeks through a hole during clashes Monday in northeastern Syria. (Nazeer Al-Khatib/AFP/Getty Images)
Smoke rises Monday from the Syrian town of Ras al-Ain on the sixth day of Turkey's offensive against Kurdish forces. (Ozan Kose/AFP/Getty Images)
The arrival of forces loyal to President Bashar al-Assad to areas once controlled by Syrian Kurdish authorities followed an agreement between the two sides to ward off a Turkish offensive. Syrian state media on Monday published photos of flag-waving troops entering the Syrian Kurdish administrative capital of Ain Issa, on the outskirts of Raqqa.