Turkish President Tayyip Erdogan said Turkey was still intending to buy a second batch of missile defense systems from Russia, a move that triggered U.S. sanctions and deepened a rift with Washington.

In an interview aired on Face the Nation with Margaret Brennan at CBS News, Erdogan said nobody can interfere with what defense systems Ankara, a NATO ally, would buy. Washington has repeatedly said a second batch of the S-400s would almost certainly trigger fresh U.S. sanctions.

Erdogan also said Biden — who has repeatedly said promoting democracy and rights and freedoms worldwide is at the heart of his foreign policy — never in their meetings raised issues with Turkey’s human rights track record.