#Commentary – Filling the Fighter Gap: Türkiye Turns to the Eurofighter After the F-35 Fallout

By Ömer Ergün Özkan

“If we cannot get the F-35, we will evaluate other options.” “There is no way we will step back from the S-400s.” “If the promises given to us are not kept, we will not approve Sweden’s NATO membership.” These are just a few of President Recep Tayyip Erdoğan’s statements since Türkiye was removed from the F-35 Joint Strike Fighter programme in the summer of 2019, following Ankara’s decision to operationalise the Russian-made S-400 air defence system. However, despite years of bold rhetoric, Türkiye has yet to take meaningful steps toward modernising its ageing F-16 fleet, a gap that carries profound implications for regional competition and nearby conflicts. Despite setbacks over the past few years, Türkiye has gained significant visibility in the global security arena through its indigenously developed defence products. Its drones have played notable roles in conflicts in Nagorno-Karabakh, Ukraine, Syria and Libya, and were recently seen during the India-Pakistan border skirmishes. At the same time, Türkiye has expanded its defence exports to include light combat aircraft to Spain, corvettes to Pakistan and Malaysia, and various other complex systems. In parallel with these achievements, Türkiye launched its own fighter jet project, the Turkish Aerospace Industries KAAN, a fifth-generation, twin-engine stealth aircraft intended to become the future backbone of Turkish air defence. However, Ankara has acknowledged the challenges of developing a fully indigenous fighter jet. Beyond the immense financial burden and limited domestic technological expertise, political obstacles have also emerged. Most recently, Foreign Minister Hakan Fidan admitted that Türkiye has been having difficulty obtaining F110 engines from the United States, intended not only for prototypes but also for the first production batch of the KAAN.

Despite Türkiye’s long-standing ambition to build its own fighter aircraft, Turkish military planners have recognised since the late 1990s that the country would require an interim, or ‘gap,’ platform. As a result, Türkiye became one of the early participants in the Joint Strike Fighter (JSF) programme, which later produced the F-35 Lightning II. In return for its early commitment, Ankara was contracted to purchase more than 100 F-35s and became a strategic industrial partner in the programme. Knowledge transfer from the JSF also enabled domestic programmes such as TÜBİTAK SAGE’s Stand-Off Missile (SOM), now one of the most critical assets in Türkiye’s strategic inventory.

Türkiye’s selection of the F-35 programme was not a surprise. Since joining NATO, it has relied primarily on American-made aircraft for its air force. Although Türkiye has operated helicopters from France, cargo aircraft from Spain and drones from Israel, its combat fleet has always been built around US designs, including the F-84, F-86, F-101, F-4 and F-5. Today, Türkiye operates the second-largest F-16 fleet in the world after the United States.

Even amid political friction with Washington, Türkiye stayed committed to its American-made fighter fleet for their battlefield performance and long-established logistics. They also carried symbolic weight as reminders of Ankara’s Cold War alignment. During the US arms embargo on Türkiye between 1975 and 1978, imposed after Türkiye’s military intervention in Cyprus, Ankara continued operating US aircraft by sourcing spare parts from Libya and purchasing used F-104s from Italy. A similar moment of tension came in 2003, when Türkiye refused to allow the U.S. to use its territory for the war in Iraq. During this period, the Eurofighter Typhoon consortium reportedly offered Türkiye an equal partnership in the programme. Yet, despite the attractiveness of the offer, Turkish decision-makers remained committed to the F-35 programme.

Türkiye has long been the second-largest standing military force in NATO and has been regarded as a strategic partner of the United States since the Korean War. Nevertheless, the relationship between Ankara and Washington has frequently been marked by political tensions. However, these disputes did not significantly alter Türkiye’s major defence procurement decisions, particularly concerning fighter aircraft. In practice, and despite political rhetoric about diversifying suppliers, Türkiye consistently relied on US platforms. However, Ankara’s removal from the F-35 programme in 2019 may mark a significant turning point. Türkiye can no longer rely on a simple reset with Washington to modernise its ageing fleet, especially as the strategic environment grows more demanding.

Since its removal, Türkiye has repeatedly signalled its desire to return to the F-35 programme. Turkish officials argued that the expulsion lacked legal basis, and President Erdoğan and his government suggested they were open to negotiating a resolution to the S-400 dispute. Meanwhile, Türkiye’s military establishment warned of a growing capability gap until the KAAN could enter service. Türkiye also expressed interest in acquiring new F-16s and modernisation kits as an interim solution, but the package has yet to be finalised. At the same time, the war in Ukraine, Israeli air operations in Syria and the region, and Greece’s modernisation of its air force have further accelerated Ankara’s search for a new fighter platform. These developments raise concerns about falling behind in the regional balance of air power and being unprepared for a potential spillover from nearby conflicts. As a result, for the first time in decades, Türkiye is actively pursuing a non-American fighter aircraft solution: the Eurofighter Typhoon.

Although Türkiye expressed formal interest in the Eurofighter a few years ago, the procurement process was blocked by Germany due to political disagreements. Following lengthy negotiations, the German government recently agreed to lift its objections, and a contract has now been signed. However, Türkiye now faces a delivery challenge. The most advanced version of the Eurofighter currently in production is Tranche 4, and the order backlog means new aircraft will not arrive before 2030. Because the Eurofighter is an entirely new platform for the Turkish Air Force, integrating it into doctrine, pilot training, and logistics will take significantly longer than adopting another US-made jet. To reduce the delay, President Erdoğan announced Türkiye’s intention to purchase used Eurofighters from Qatar and Oman alongside the 20 new Tranche 4 aircraft from the UK.

Ankara’s assertive pursuit of the Eurofighter highlights its growing concern over the balance of air power in its surrounding region. Despite significant advances in its drone fleet, including one-way attack drones and jet-powered unmanned systems, Türkiye understands that drones cannot fully replace conventional fighter jets in terms of deterrence and air superiority. Yet significant questions remain. Will Germany and other consortium members approve the transfer of Meteor long-range air-to-air missiles or Captor radar systems to Türkiye as well? Will Türkiye be permitted to integrate indigenous avionics and weapons into the Eurofighter? And how quickly can the Turkish Air Force develop the same level of operational proficiency it currently maintains with the F-16?

Ankara has now taken a decisive step away from decades of exclusive US fighter procurement. Whether the Eurofighter becomes a temporary gap-filler until the KAAN enters service, or the beginning of a long-term shift in Turkish defence strategy, remains to be seen. What is certain is that Turkish air power is at a strategic crossroads. Despite the uncertainties, the Eurofighter Typhoon remains the only available option to bridge the capability gap until the KAAN is operational or the F-35 dispute is resolved.

Ömer Ergün Özkan is a PhD candidate in the School of Public and International Affairs at the University of Cincinnati. His research examines military effectiveness, the impact of emerging technologies on defence procurement, and the strategic use of unmanned systems in modern warfare. He is also a Research Fellow at the Linda Hall Library in Kansas City, Missouri. He can be followed on X as @ErgnZkan.

Header image: Typhoon FGR.Mk 4 and T.3 of No. 41 (Test and Evaluation) Squadron flying during Exercise FORMIDABLE SHIELD, 16 May 2025. During Exercise FORMIDABLE SHIELD, No. 41 Squadron worked with Royal Navy and NATO ships and developed winning tactics to enhance the NATO defence against ballistic missiles. (Source: UK MOD © Crown copyright 2025)