Kerem Kocalar | Anadolu Agency | Getty Images
Turkish and American flags are seen during a ceremony when their service ended on September 15, 2015 at the Patriot rocket launch in Gaziantep, Turkey.
Ankara has been waiting for this guarantee for some time and has been complaining since its agreement in June that Washington was dragging the deal with its feet. The US supports the Syrian-based Kurdish People's Protection Unit (YPG) as part of the Syrian Democratic Forces fighting against the Islamic State (IS), but the Turks see the fighting turns against a Kurdish terrorist group that has been waging protests against the Turkish state for decades ,
Last week, Erdogan threatened to attack Manbij to "cleanse" him of the YPG, which he called terrorists – a move that the Pentagon called "unacceptable." It is expected that the US withdrawal will begin within a few weeks.
At the time of this release, the Pentagon had not yet responded to a CNBC call for comments sent on Tuesday.
Turkey also plans to cross the river Euphrates River in the east of northern Syria "as soon as possible," said Turkish Foreign Minister Mevlut Cavusoglu on Tuesday to local media, without going into detail. Manbij lies west of the Euphrates, but the Kurdish forces control a wide strip of land on the east side of the river.
With the imminent withdrawal of US troops from Syria, Turkey will have a powerful influence in displacing the Kurdish forces that are now in the country, making them feel that they are being abandoned by their American counterparts. Turkish troops have accumulated on the Syrian-Turkish border and there are Turkish-backed Syrian rebels near Manbij. The Kurds have reportedly begun excavating trenches and trenches in anticipation of the offensive, and Turkish Defense Minister Hulusi Akar said on Thursday, "They will bury when the time comes."