Turkey summoned the U.S. and Russian ambassadors separately on Tuesday to convey their concerns regarding Syrian Kurdish forces fighting the ISIS terrorist group in Syria and “unacceptable military and political support by the U.S. or by Russia.”

Turkish Prime Minister Ahmet Davutoğlu, said in televised comments: “We have a clear position. That position has been conveyed to the United States and the Russian Federation. Turkey cannot accept any cooperation with terrorist organisations which have waged war against it.”

Turkey has been active on its war on terror against ISIS and with the Kurdistan Workers’ party (PKK) who has waged a bloody insurgency since 1984 into Turkey, but has so far focused almost exclusively on bombing of the Kurdish militants in northern Iraq. The Democratic Union party (PYD) is considered to be a Syrian offshoot of the PKK by Turkey and military officials there are concerned that weapon drops to Syrian rebels by the U.S. and ammunitions being supplied to Assad’s forces by Russia are being confiscated and used by the PYD.   

Involved in harsh fighting with ISIS for many months, the PYD’s Kurdish fighters control large parts of northern Syria on the Turkish border.  

“We know that some of those who fled from [Turkish] operations against the PKK in northern Iraq joined the ranks of the PYD in Syria. We have a clear stance against terrorist organisations which waged a war against Turkey. We have the same attitude against their affiliates.” said Prime Minister Davutoğlu. “Just as the United States and other friendly allies fight against al-Qaida linked groups, Turkey is determined to fight against the PKK and its affiliates.”