Turkey's Vice President Fuat Oktay lashed out at the United States, saying Washington must choose if its wants to remain allied with Ankara.
"The United States must choose. Does it want to remain Turkey's ally or risk our friendship by joining forces with terrorists to undermine its NATO ally's defense against its enemies?" Oktay said on Twitter, responding to threats from US Vice President Mike Pence.
His remarks came in response to his U.S. counterpart Mike Pence's tweet in which he said that Turkey must choose whether it wants to remain a critical partner of NATO, or continue its purchase of the Russian S-400 missile defense system.
"Turkey must choose. Does it want to remain a critical partner in the most successful military alliance in history or does it want to risk the security of that partnership by making such reckless decisions that undermine our @NATO alliance?" Pence said.