IMF Sheds Light on Impact of Possible Anti-Turkey US Sanctions Over S-400

"On the sanctions and so on, I wouldn't want to speculate prematurely on a possible impact", Rice said.

During the briefing, Rice also noted that the IMF continues to monitor the economic situation in Turkey very closely.

"We received no indication from the Turkish authorities that they are contemplating a request for financial assistance from the IMF", Rice added.

The statement comes after NBC News, citing sources familiar with the matter, reported on 21 May that Washington has given Ankara a deadline — the end of the first week of June — to either abandon the S-400 deal with Russia or face penalties. According to the report, the penalties would include sanctions, removal from Lockheed Martin's F-35 program and the cancellation of 100 promised F-35 jets.

READ MORE: 'Very Negative' Consequences For Turkey If S-400 Deal Takes Place — State Dept

The United States has repeatedly warned Ankara against buying the Russian air defence systems, saying that they are incompatible with NATO systems and may expose weaknesses of the F-35 jets to Russia's advantage.

Turkey, in turn, has insisted that it is not going to give up its $2.5 billion contract with Russia. The first batch of S-400s is expected to be delivered to Turkey in July.