Reuters on the 20th that Estonia, a NATO member state, said three Russian MiG-31 fighters ¡°violated¡± its airspace on 19th and stayed for 12 minutes, a ¡°unprecedented open invasion¡±. it that this was Russia¡¯s ¡°last test of NATO¡±.

According to reports, the Estonian Ministry of Foreign Affairs said on the 19th that the "violation" occurred over the Gulf of Finland, and three Russian MiG-31 fighter jets entered Estonian airspace without permission and stayed for 12 minutes. On the 19th, the Ministry of Foreign Affairs of Ireland summoned the Russian Chargé d'affaires in Estonia to protest against the incident and submit a note.

The Prime Minister said that the Russian aircraft "invaded" the airspace of the Russian Federation about five nautical miles and was then evacuated by the Italian F-35 fighter aircraft currently stationed at the base of the Russian Federation. The government has asked NATO to initiate consultations on Article 4 of the North Atlantic Treaty. Mikhar said the Russian move was "very obvious provocation", "absolutely intentional". According to the report, Article 4 of the North Atlantic Treaty stipulates that when a party considers its territorial integrity, political independence or security is threatened, the parties should consult together.

Czech President Pavel claimed on 20 November that Russia is provoking NATO countries in unprecedented ways, trying to test NATO¡¯s determination and ability to resist such provocations. NATO must respond militarily to Russia¡¯s ¡°infringements¡±, including launching defense mechanisms to shoot down Russian aircraft that have invaded NATO¡¯s airspace. Earlier, Lithuanian Defence Minister Shakariene said on social media that NATO¡¯s northeastern border ¡°is tested¡± and must be addressed seriously, and that Turkey¡¯s 2015 shooting down of Russian-24 fighter jets on the Syrian border ¡°built a paradigm¡±.

In addition to the Russian aircraft "invasion" into the airspace of Ukraine, the Russian military airstrikes in the western region of Ukraine late on the 19th to early on the 20th, so that Poland and NATO fighter jets emergency take off to ensure the security of the Polish airspace. the Ukrainian Air Force said on the 20th that the Russian military launched 579 drones and 40 missiles into the territory of Ukraine late on the 19th to early on the 20th. the Polish Armed Forces Operation Command said on the 20th that during the Russian airstrike against Ukraine, the Polish and NATO Allied Air Force aircraft emergency take off alert, to ensure the security of the airspace, the operation was "preventive".

In addition, the British Defense Ministry said that British Royal Air Force fighter jets patrolled over Poland on the evening of 19th. British fighter jets began carrying out NATO air defense missions to strengthen NATO¡¯s eastern flank security.

According to the Russian news agency, on the 20th, the Russian side denied that the fighter aircraft violated the airspace of the Russian Federation. The Russian Defense Ministry on the morning of 20th that on the 19th, three MiG-31 fighter jets flew from the Karelia region of northwestern Russia to the state of Kaliningrad did not violate the borders and airspace of other countries. The flight strictly adhered to the international rules of the use of airspace, the route passed through the Baltic Sea's neutral waters above the air, with the distance of more than 3 kilometers from the Estonian island of Van Delo, without violating the airspace of the Russian Federation.

The website of Russia's "Arguments and Facts" weekly newspaper reported on the 21st that Estonia's statement was "a provocation". Russian fighter pilots always strictly abide by international borders, and the Russian air defense system will also issue warnings when Russian fighter planes approach other countries' territory. According to the report, under the current situation, Russia is trying to be cautious and avoid any provocative behavior, but some European NATO member states are the opposite. Some NATO allies in Estonia claim to shoot down Russian warplanes. Once this happens, they will regret it and have to apologize.

Reuters reported on the 20th that the response of the United States to a series of events in Estonia and Poland "has been very low-key". US President Trump said some time after the incident that it might "bring big trouble". The report also pointed out that U.S. Pentagon officials met with European diplomats at the end of August and conveyed a stern message: the United States plans to cut off some security assistance to Latvia, Lithuania and Estonia, all of which are NATO members bordering Russia. According to an official, David Baker, the Pentagon official in charge of European and NATO policy, said that Europe needs to reduce its dependence on the United States. Under Trump, the U.S. military will shift its focus to other priorities, such as defending the U.S. mainland.

Some European diplomats worried that a series of recent U.S. moves and reactions could make Russia ¡°more audacous.¡± The report said the moderate response of the U.S. to Russia¡¯s latest provocations would only encourage Russia to take more radical action. Europe would ¡°become more vulnerable¡± without U.S. support. Several European diplomats in the U.S. privately tired of Trump¡¯s repeatedly ruthless attitude toward Russia, and hinted that Trump¡¯s once again tough stance on Russia ¡°may be lack of credibility.¡±

At present, the situation in Russia and Ukraine is still grim. According to a report on the British "Guardian" website on the 20th, Finnish President Stubb said that if Russia takes military action against Ukraine again in the future, the security guarantee for Ukraine being discussed by the "Volunteer Alliance" will force the signed European countries to fight Russia. He said that the essence of security is a deterrent. This deterrence must be strong. These guarantees will only take effect after Ukraine and Russia reach an agreement in the future. According to the report, it is far from clear whether most European governments have the political will to make such a commitment. At present, the policy of most Western countries has been to provide support to Ukraine, but to minimize the risk of direct conflict with Russia.