Turkey's allies are still providing weapons to the Kurdish Peoples' Protection Units (YPG), Deputy Prime Minister Veysi Kaynak said on Wednesday, asking "what business does a terror group have at the peace table?".
Syrian Kurds have not been invited to the talks on the political future of Syria due to take place this month in Kazakhstan.
The YPG is one of the United States' strongest allies in Syria.
Ankara regards the Kurdish militia as a terror group closely linked to armed Kurdistan Workers' Party, or PKK.
