Cavusoglu told reporters on Wednesday that "there is no question of any delay or of any halting at this point." He reiterated that Turkey's purchase of the Russian-made systems is a "done deal."
The issue has caused a deep rift with the United States, which says the Russian missiles pose a threat to the U.S. F-35 fighter jet program of which Turkey is also a partner. Media reports suggested Turkey would delay the purchase.
Cavusoglu said Turkey and the United States were discussing a Turkish proposal for the establishment of a joint committee to review the S-400s possible risks to the U.S. F-35 program.