Syrian rebels, with the support of Turkish troops, captured the center of the first city of Ras al-Ain.
"The National Army (Syrian rebels) has taken control of the city center this morning. Inspections are ongoing in residential areas," a senior Turkish official said.
During the turmoil that began in Turkey, 30 civilians have been killed among Syrian civilians.
Taip Erdogan has launched an attack on the Kurds after speaking with US President Donald Trump, noting that Ankara considers Kurdish detachments terrorist because of insurgency ties in Turkey.