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The Netherlands has announced it would deploy F-35 fighter jets in Poland to reinforce NATO’s eastern flank amid growing concerns over Russian military activity. The jets will be used to carry out patrol missions to protect supply lines for Ukraine.

The announcement, made by Dutch Defense Minister Ruben Brekelmans, underscores the Netherlands’ growing military involvement in collective European defense and the alliance’s broader efforts to deter Russia.

In a formal letter to the Dutch Parliament, Brekelmans said the mission would be a joint operation with Norway and would take place between September 1 and December 1, 2025. While the specific number of aircraft was not disclosed, the deployment will draw from the Netherlands’ current fleet of 46 F-35 aircraft.

These F-35 stealth fighter jets will be stationed in Poland to patrol NATO’s eastern airspace and defend against aerial threats, including ballistic missiles and drones.

“This deployment is part of the military-strategic objective of deterring Russia and defending the NATO treaty area,” Brekelmans wrote. The jets will also be tasked with securing the NATO Support and Training Unit for Ukraine (NSATU), which is based in Poland. NSATU plays a critical role in providing training and logistical support to Ukrainian forces as the war with Russia continues into its third year.

For the security of the Netherlands, it is important we help defending NATO’s eastern flank.

From September onwards, Dutch F-35s will patrol NATO airspace from Poland, in close cooperation with Norway.

This keeps Russia at bay and protects supply lines to Ukraine. 🇳🇱🇳🇴🇵🇱 pic.twitter.com/YmwXX9gWjr

— Ruben Brekelmans (@DefensieMin) July 7, 2025

Dutch-Polish defense pact

The announcement was made while Minister Brekelmans was visiting Poland alongside caretaker Dutch Prime Minister Dick Schoof, who was in Warsaw to sign a new defense cooperation agreement with Polish Prime Minister Donald Tusk.

The updated agreement modernizes a previous bilateral military pact dating back to the 1990s, aiming to enhance the interoperability and readiness of the two countries’ armed forces in the face of new security challenges.

“With a war on our continent, cooperation in the area of defense is not a luxury, but a necessity,” Schoof said during a press conference held jointly with Tusk in Warsaw. “That’s why we feel lucky to have a partner such as Poland, which has known much longer what it is like to live under threat,” he added.

The new pact is expected to facilitate joint military exercises, intelligence sharing, logistics coordination, and enhanced joint readiness for combat and humanitarian missions. Polish and Dutch troops already collaborate within NATO frameworks, but the agreement is designed to provide a bilateral legal and operational structure that reflects today’s realities.

Rising tensions on NATO’s eastern front

The Netherlands’ decision comes at a time of heightened military vigilance across Eastern Europe. NATO has significantly increased its presence in member states bordering Russia and Belarus since Russia’s full-scale invasion of Ukraine in February 2022. Poland, which shares a border with both Belarus and Ukraine, has become a key frontline NATO state and a logistics hub for military support to Kyiv.

Over the past year, Poland has ramped up its defense capabilities, committing to spend over 4% of its GDP on defense in 2025, one of the highest in the alliance. It has procured tanks, missile defense systems, and fighter aircraft from the U.S. and South Korea, while calling on other NATO allies to step up their presence in the region.

The deployment of Dutch F-35s adds to the growing number of NATO assets already stationed in Poland, including U.S. Patriot missile batteries and British reconnaissance units.

Netherlands’ role in European security

For the Netherlands, the F-35 deployment marks a significant evolution in its defense posture. Long seen as a primarily diplomatic power within NATO, the Netherlands has recently stepped up its investment in high-tech military assets and forward deployments. The Dutch government has already committed to expanding its F-35 fleet from 46 to 57 aircraft by 2028, signaling a shift toward a more robust air defense and offensive strike capability.

The F-35 Lightning II, produced by Lockheed Martin, is one of the most advanced multirole stealth fighter jets in the world. Its deployment in Poland will provide not only air superiority but also critical intelligence, surveillance, and reconnaissance (ISR) capabilities. With advanced sensors and communication systems, the F-35s are well-equipped to detect and intercept aerial threats, especially in contested environments.

While the Dutch government has not revealed how many jets will be sent to Poland for this mission, defense analysts suggest that a typical NATO air policing detachment consists of four to eight aircraft. These will likely be based at Polish airbases capable of supporting F-35 operations, such as Lask or Powidz.

Strategic implications for NATO and Russia

The deployment of Dutch fighter jets sends a strong political and military signal to Moscow that NATO remains unified and ready to defend its territory. While Russia has not commented on the Dutch decision so far, similar moves in the past have drawn sharp criticism from the Kremlin, which accuses NATO of escalating tensions in the region.

However, NATO officials maintain that these deployments are defensive and are aimed at preventing further Russian aggression, particularly considering the increased aerial threat to Europe.

By providing direct air cover to the NSATU and reinforcing the eastern airspace, the Dutch deployment supports both Ukraine’s war effort and the broader NATO objective of keeping the conflict from spilling over into alliance territory.

The coming months will test the alliance’s resolve as NATO leaders continue to balance deterrence, defense, and diplomacy, with Poland increasingly at the center of Europe’s new military geography.