British Royal Air Force Typhoon fighter jets will deploy to Poland to help prevent further incursions into NATO airspace after a large-scale Russian drone operation penetrated Polish territory earlier this month, the UK Ministry of Defence said Monday.

The Typhoons will fly alongside Danish, French and German aircraft as part of the Eastern Sentry mission and will be supported by Voyager air-to-air refuelling tankers. Defence ministers approved the deployment at a NATO meeting called by Poland under Article 4 of the Washington Treaty, officials said.

The reinforcement follows an incident in which 19 Russian unmanned aerial vehicles crossed into Polish airspace and travelled more than 100 miles toward a NATO air base before falling to earth. Allied officials said four of the 19 devices were shot down — an action described by some officials as the first direct military engagement between NATO and Kremlin forces. A further breach of NATO airspace by Russian drones was reported over Romania on Saturday.

The deployed Typhoons will operate from RAF Coningsby in Lincolnshire and will conduct patrol and intercept missions alongside allied aircraft in the coming days, the MoD said. The move is intended to deter further Russian aggression and reassure eastern NATO members of the alliance's commitment to collective defence.

UK Labour leader Sir Keir Starmer described the incursions as "a direct threat to European security and a violation of international law," adding that the UK's contribution to NATO's eastern flank was necessary to deter aggression and protect national interests.

The UK Foreign Office summoned the Russian ambassador to London following the incursions. A ministry statement described the "significant and unprecedented violation of Polish and NATO airspace by Russian drones" as "utterly unacceptable."

Ukrainian President Volodymyr Zelensky warned that Russia was deliberately expanding its drone operations, a concern echoed by several NATO partners as allied ministers met to coordinate responses and bolster air defences on the alliance's eastern flank.

NATO ministers discussed the reports of incursions at the meeting Poland requested under Article 4, a provision that allows members to consult when they feel their territorial integrity, political independence or security is threatened. Officials from participating countries agreed to reinforce surveillance and air policing measures in the region.

Military and diplomatic responses are ongoing as NATO and member states assess the scale and intent of the drone operations. Allied leaders have emphasised that defensive measures will remain proportionate and coordinated through NATO structures while they continue to investigate the circumstances of the airspace breaches and the origin of the unmanned aerial systems involved.

The deployment of RAF Typhoons underscores NATO's heightened attention to airspace security in eastern Europe amid rising concerns about the use of unmanned systems in cross-border incidents. Further updates on operations and assessments of the incursions are expected as allied officials continue consultations and intelligence reviews.