Syria will send troops along the Turkish border in an agreement with the Kurds to help fight Ankara's military operation.

The deployment will help the Kurdish Syrian Democratic Forces (SDF) fight "invasion from Turkey" and "liberate areas where Turkish troops and allies have invaded." , the Kurdish government announced on October 13, referring to Syrian rebels backed by Ankara. It also helped free other Syrian cities occupied by Turkish troops, such as Afrin, the announcement added.

Turkish troops and Syrian rebel allies have pushed Kurdish forces out of Afrin since 2018.

The agreement between the Kurdish and Damascus governments came about amid the United States last week's sudden announcement of the withdrawal of troops from northern Syria, paving the way for a military operation aimed at Turkey's Kurds. SDF, an important ally with the US in its campaign against the Islamic State (IS), calls Washington's actions no different from "a backstabbing".

"In order to prevent (Turkey) 's attack, according to an agreement reached with the Syrian government, who have the duty to protect the border and sovereignty of the country, the Syrian army will enter to deploy troops along. border length with Turkey, "the Kurdish government said.

Turkey launched a military operation in northeastern Syria on 9 October to target the SDF's location, with the core of the Kurdish People's Protection Units (YPG), which it considers terrorist.

Turkey's campaign raises fears that ISIS could take advantage of the chaos to rise after the failure earlier this year. More than 130,000 people had to leave their homes due to the intense fighting. The Turkish military announced it had captured the important town of Ras al-Ayn near the border on October 12, while also controlling many villages in northern Syria.