Raqqa, a city some 160 kilometers east of the northern Syrian city of Aleppo, is in the process of being encircled by the SDF and US artillery and armored personnel carriers.
The Kurds have served as America's primary ally in the fight against Daesh.
Earlier, SDF spokesman Talal Silo said, referring to Raqqa, that they "expect that within a few weeks there will be a siege of the city."
He was also quoted by the Iranian news agency Fars as saying that the Arab-Kurdish detachments will not allow Turkey to participate in their military operation, since they see Ankara as "an occupant" in northern Syria.
Selo was echoed by Ahmed, who said that the strength of the SDF is growing, and that they have enough power to liberate Raqqa all by themselves.
"We do not need foreign troops to eradicate Daesh in Raqqa," Ahmad was quoted by the TV channel Kurdistan 24 as saying.
Operation Euphrates Rage, aimed at liberating Raqqa from Daesh, was launched by the SDF on November 5, 2016.
In a recent interview, Syrian President Bashar Assad said that he does not consider the liberation of Raqqa, which in 2012 had a population of over 220,000, a priority task.
He stressed that priorities depend on the course of combat operations, and as far as Raqqa is concerned, "it is little more than a Daesh symbol."
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