The Pentagon commented on the possibility of exclusion of Turkey from NATO

“This is a solution for the NATO alliance. Turkey is a long-time member of NATO, ”Trachtenberg told reporters when asked whether Ankara should remain in the North Atlantic Alliance after acquiring Russian air defense systems.

He noted that it was not for the United States to decide "what should or should not happen."

Earlier, the White House said that the purchase of Russian S-400 air defense systems by Turkey makes it impossible to acquire American F-35 aircraft, the deal with Russia will have “disastrous consequences” for Ankara.

Expert Edward Lozansky commented on the NSNS likelihood of imposing sanctions against third countries because of the C-400.