Foreign, Commonwealth & Development Office (FCDO) reported the information.An FCDO spokesperson stated that the recent significant and unprecedented violations of Polish and NATO airspace by Russian drones, followed by another incursion into Romanian airspace, were "utterly unacceptable." The UK stands united with Poland, Romania, Ukraine, and its NATO allies in fully condemning these reckless actions.“As our continent once again faces the egregious expansion of Russia’s reckless behaviour, defence of Ukraine against Putin’s aggression is crucial to the security of the whole of Europe, including the UK,” he said.According to him, NATO’s response demonstrates the seriousness with which the Alliance is treating Russia’s actions, and, as the Secretary General announced on Friday, NATO and its Allies are strengthening their defenses along the eastern flank, using new technologies such as counter-drone sensors and weapons.“Russia should understand that its continued aggression only strengthens the unity between NATO allies and our determination to stand with Ukraine, and any further incursions will again be met with force. Russia must end its illegal war on Ukraine,” an FCDO spokesperson concluded.Russian Shaheds in Polish airspace. BackgroundPolish Armed Forces’ Operational Command put air defense systems and aviation on highest alert due to Russia’s night attack on Ukraine: Russian drones violated the country’s airspace.As a result of a Russian attack on the night of September 10, drone debris fell on a residential building in a village in Poland’s Lublin Voivodeship. No one was injured.Ukraine's President Zelenskyy says Ukraine is ready to help Poland develop an alert and air defense system. Meanwhile, European Commission President von der Leyen announces the EU will build a “drone wall” on the Russia border.Ukrainian President Volodymyr Zelenskyy commented on the violation of Poland’s airspace by Russian drones, stating that Kyiv had warned Warsaw about the UAV movements.On Wednesday, September 10, NATO activated Article 4 of the North Atlantic Treaty after Russian drones violated Polish territory.