Erdogan Remains Unmoved As US Senators Seek To Kill F-35 Transfer To Turkey

Turkey has slammed the door on Washington's demands that it cancel its S-400 contract with Moscow in the wake of continued US threats that it will deny transfer of F-35s to Turkey over the Erdogan government's plans to move forward with taking delivery of the advanced Russian anti-air defense system. 

This after on Thursday four US senators introduced a bipartisan bill to prohibit the transfer of the F-35 until the US can certify that Ankara will reject the S-400 deal. But Turkish officials reiterated their prior stance that it's a "done deal" and that Turkey won't back down. 

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"We have signed a deal with Russia, and this deal is valid. Now we are discussing the delivery process," Foreign Minister Mevlut Cavusoglu said on Friday during a press conference while standing beside his Russian counterpart. He added that "We have an agreement with Russia and we are bound by it."

Confirming Turkey is set to take delivery from the Russians in July of this year, Cavusoglu added that every aspect of Turkish defense purchases were legitimate and in accord with international law.

He noted Ankara has met its obligations to Lockheed Martin, producer of the advanced F-35 stealth fighter. "Turkey is also a partner in the F-35 project. Some parts are being made in here in Turkey. Turkey has fulfilled its responsibilities in this regard," the minister said.

The first Russian S-400 delivery is expected in July, and the Turkish and Russian FMs confirmed delivery process details are now being hashed out. 

The advanced Russian-made S-400 air defense system purchased by Turkey has been seen as a threat by the United States, given the potential for compromising the F-35 advanced radar evading and electronics capabilities. 

The main argument for blocking the F-35 transfer is the fear that Russia would get access to the extremely advanced Joint Strike Fighter stealth aircraft, enabling Moscow to detect and exploit its vulnerabilities, meaning Russia could ultimately learn how the S-400 could take out an F-35. 

Early this month Erdogan warned Washington during a Turkish TV interview to cease from coercion or "disciplinary measures" in the form of sanctions or restrictive trade action, noting Turkey has considered potential retaliatory measures itself. 

Erdogan said emphatically at the time: “There can never be a turning back. This would not be ethical, it would be immoral. Nobody should ask us to lick up what we spat.” 

Thus it appears the imminent transfer of the S-400s is a done deal, perhaps also sealing future years of permanently damaged US-Turkey relations, after Washington has for months tried to simultaneously coerce Turkey into spending $3.5 billion on US Patriot missiles.

The issue has introduced severe tensions between NATO and Turkey, as NATO fears increased Turkish closeness and cooperation to Putin's Russia could compromise the alliance, and its technology and strategic readiness.