‘Unprecedented and Brazen’: Russian Fighter Jets Cross Into NATO Member Estonia’s Airspace

Latest Developments

Russian “Intrusion” into Estonian Airspace: Three Russian MIG-31 fighter jets violated Estonian airspace on September 19 for approximately 12 minutes, the fourth incident of its kind in 2025. Estonia’s Foreign Minister Margus Tsakhna called the event an “unprecedented and brazen intrusion — clear proof of Russia’s growing aggression.” NATO Allied Command Operations said in a statement that Italian F-35s stationed in Estonia, as well as aircraft from Sweden and Finland, were scrambled in response, and NATO Spokesperson Allison Hart said that Swedish fighters jets intercepted Russian aircraft over the Baltic Sea following the violation of Estonian airspace. Following the incident, Estonian Prime Minister Kristen Michal said his government had invoked Article 4 of the NATO Charter, which triggers a consultation with its NATO members to “exchange views and information, and discuss issues prior to reaching agreement and taking action.”
Incident Follows Drone Incursions into Poland: The Russian incursion follows a September 10 incident during which at least 19 Russian drones flew into Polish airspace, leading to NATO scrambling fighter aircraft to intercept them. NATO Secretary General Mark Rutte stated at the time that forces involved in the defense of Poland included Polish F-16s and Dutch F-35 fighters, as well as German Patriot air defense systems and an Italian surveillance aircraft. Polish Prime Minister Donald Tusk invoked Article 4 of the NATO Charter in the immediate wake of the incursion.
NATO Operating New Air Patrol to Counter Russian Threat: In response to the Russian violations over Poland, NATO announced the launch of Eastern Sentry will integrate enhanced defenses in the region, including increased air patrols, interceptor systems, new sensors, and heightened surveillance. Rutte called Russia’s actions “reckless” after the incident, adding that “allies are determined to step up their support for Ukraine in the face of Russia’s escalating campaign.” Separately, the European Union approved a new round of sanctions against Russia on September 19, including designating 118 vessels of Russia’s “shadow fleet” alongside efforts to “phase out” of Russian liquefied natural gas imports.

FDD Expert Response

“Russia’s ability to impose costs on Estonia and the other Baltic States is clear, and this Mig-31 flight is a direct demonstration of the risk these democracies face. NATO has to more forcefully and proactively organize and deploy air defense and air power forces in the Baltics to deter and if necessary defeat the Russians. The last thing that should be happening is any kind of pull back in forces by the United States or any other NATO force provider.” — RADM (Ret.) Mark Montgomery, Senior Fellow and Senior Director of FDD’s Center on Cyber and Technology

“Russian President Vladimir Putin has been candid about his desire to discredit NATO. Russia’s breach of Estonia’s airspace tells us all we need to know about Putin’s hybrid war plans, which range from misinformation operations and sabotage to assassinations and coups. As the Trump administration attempts to negotiate an end to Russia’s war of aggression against Ukraine, it should not ignore Putin’s long-term commitment to hybrid war. NATO must adapt Article 5 of its Charter — stating that an attack on one is an attack on all — for this new era of warfare and actively counter Russia’s hybrid efforts around the world to ensure that Moscow expends time, energy and resources on defending itself, instead of attacking the alliance.” — Ivana Stradner, Research Fellow

“Russia continues to test the West’s resolve, as this latest brazen violation of Estonian airspace demonstrates. The Kremlin thinks it can hide its greatest weakness: Russian tanks and jets are not nearly as vulnerable as Russian banks. Now is the moment for the United States and our allies to hammer Moscow with unprecedented economic sanctions and trade penalties. Otherwise, these dangerous provocations will escalate.” — Peter Doran, Adjunct Senior Fellow

“The Trump Administration has exhibited a consistent reluctance to impose more serious consequences on Putin for his aggression, a hesitancy to support Ukraine beyond allowing Europeans to purchase American weapons for Kyiv, and an eagerness to reduce the U.S. military commitment in Eastern Europe. We should not be surprised that Putin sees that disposition in Washington as an invitation for a more aggressive approach. Expect more Russian belligerence and dangerous incursions of NATO airspace unless we respond with more strength to shift Putin’s cost-benefit analysis.” — Bradley Bowman, Senior Director of FDD’s Center of Military and Political Power