Turkey-backed rebel forces are continuing their advance to "clear terrorism" in northern Syria, a Turkish defense ministry source said on Thursday, referring to the forces' battle against Kurdish forces in the region.
Turkey has been telling the United States repeatedly that "a terrorist organization cannot be eliminated by using another terrorist organization," the source also said.
The source was speaking about US support for the Syrian Democratic Forces (SDF) in the fight against Islamic State. The SDF is spearheaded by a Kurdish militia that Ankara regards as a terrorist group.