U.S. officials have informed Congress that Turkey is ineligible for the F-35 program. this stems from Ankara's continued use of Russia's S-400 missile system.

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The S-400 barrier and the National Defense Authorization Act

The U.S. state Department has notified Congress that Turkey has not met the necessary legal requirements to rejoin the F-35 Joint Strike Fighter initiative. This decision is primarily driven by Ankara's continued possession of the Russian-made S-400 air defense system, a move that led to the country's removal from the program in 2019.

According to a State Department letter to Congress, the legal hurdles are significant. Under the National Defense Authorization Act, Turkey must fully divest itself of the Russian system before any F-35 deliveries can occur. This follows years of tension , including 2020 sanctions imposed over the initial purchase of the missile batteries.

Turkey's history with the progrram is long, having originally joined the multinational development initiative in 2002. At that time, the country had committed approximately $1.4 billion to the project with the intent of procuring a fleet of advanced stealth fighters.

A $2.5 billion potential sale to the United Arab Emirates

Turkish officials have reportedly explored a way to resolve the impasse by transferring the S-400 batteries to the United Arab Emirates. This proposed transaction is valued at approximately $2.5 billion and could potentially satisfy the requirement for Turkey to remove the systems from its own inventory.

However, the move introduces new geopolitical complications. The United Arab Emirates already operates U.S.-made defense technology, including THAAD and Patriot systems, and has expanded its defense ties through the Abraham Accords. Washington remains concerned about the proliferation of Russian hardware within a nation that relies heavily on American defesne equipment .

Bipartisan resistance and Senator Lindsey Graham's stance

Despite recent diplomatic overtures and President Trump's expressed desire to sell the aircraft to Ankara, members of the U.S. Congress have shown swift resistance. Lawmakers have cited Turkey's ties to Russia during the Ukraine war and its ongoing tensions with fellow NATO members Greece and Israel as major points of concern.

Senator Lindsey Graham has voiced ambivalence regarding the situation. While acknowledging Turkey's role as a significant Muslim NATO ally, Graham noted that the specific conditions required for Turkey's return to the program have not yet been met. The State Department's letter, as reported by a Greek publication, acknowledges some Turkish cooperation on diplomacy but maintains that the S-400 issue remains a fundamental barrier.

Will a UAE transfer satisfy Washington's divestment mandate?

Several critical questions remain regarding the future of the six F-35s currently allocated for Turkey, which remain in storage pending a resolution. The following points remain unverified or unresolved:

  • Will a sale to the United Arab Emirates be legally recognized as a complete divestment under the National Defense Authorization Act?
  • How will the introduction of Russian S-400s into the UAE's defense ecosystem affect NATO interoperability?
  • Will the State Department's reported lenieency regarding Ankara's contacts with Hamas influence future defense negotiations?