Purchase of Russian S-400 Heightening Tensions Between Turkey, US and NATO

President Recep Tayyip Erdogan said the delivery of Turkey’s disputed Russian S-400 missile defense systems could be earlier than initially planned, Hurriyet daily reported on Wednesday.

Ankara’s purchase of the S-400s risks US sanctions and has further strained already tense relations with Washington.

US officials are concerned over the incompatibility of the S-400s with NATO military hardware as well as Ankara’s increasingly close relationship with Russia.