Turkey Has Not Received US Ultimatum to Abandon S-400 Deal - Defence Minister

Tensions between Turkey and the United States have reached a fever pitch in recent months over Ankara's decision to go ahead with the purchase of Russia-built air defence systems, which Washington claims will jeopardise its NATO ally's role in the F-35 fighter jet programme and could prompt sanctions.

Ankara has not received an ultimatum from Washington over the S-400 deal, Turkish Defense Minister Hulusi Akar said in an interview with the Turkish channel Haberturk.

READ MORE: US Might Suspend Turkish F-35 Pilots Training Over Russia Missile Deal — Reports

Akar's comments come amid reports that the United States has put forward an ultimatum to Turkey, threatening to kick Ankara out of the F-35 fighter jet programme if the Turkish government does not abandon the Russian missile defence systems.

The minister stressed that he would not comment on the "assumptions" when asked how Turkey would act if the United States imposed sanctions on Ankara.

"We are acting in full compliance with the commitments we have undertaken," Akar added, while emphasising that Turkey has fully paid for the delivery of F-35 fighters from the US, and Turkish pilots are already training on the new jets.

Meanwhile, Reuters cited two unnamed sources with knowledge of the situation as claiming that Washington is considering suspending training for Turkish pilots as the two countries have been at loggerheads for months.

The Pentagon and State Department have yet to comment on the claims. Turkish pilots are currently training at Like Air Force Base in Arizona, even though the Pentagon has already halted deliveries of F-35 equipment to Turkey.

Last week, US State Department spokesperson Morgan Ortagus said in a statement that Turkey's acquisition of Russia's S-400 would have "very real and very negative consequences".

The United States has, on a multitude of occasions, claimed that the S-400s are incompatible with NATO military equipment and alleged that the Russian air defence systems pose a threat to the F-35s.

READ MORE: Turkey Refuses to Bow to US Sanctions Over S-400 Deal

Ankara, in turn, has insisted that the purchase of those weapons is its sovereign affair and has excluded the possibility of abandoning plans to complete the purchase.

The Turkish side has also stressed that the S-400s were not connected to the security of the alliance, the US or the F-35 in any way, and the decision to acquire them “does not target a third country”.

As Turkey has consistently refused to abandon the deal, Washington has threatened to withhold the sale of the stealth fighters to Ankara, or to slap it with sanctions under the 2017 Countering America’s Adversaries Through Sanctions Act (CAATSA).

Russia and Turkey signed a $2.5 billion loan agreement for the shipment of a total of four batteries of S-400 systems in December 2017. The first delivery is set for July 2019 and will proceed as scheduled, according to Turkish officials.