Russia has chosen to escalate their war of aggression
https://www.nato.int/cps/en/natolive/official_texts_17120.htm
The Parties agree that an armed attack against one or more of them in Europe or North America shall be considered an attack against them all and consequently they agree that, if such an armed attack occurs, each of them, in exercise of the right of individual or collective self-defence recognised by Article 51 of the Charter of the United Nations, will assist the Party or Parties so attacked by taking forthwith, individually and in concert with the other Parties, such action as it deems necessary, including the use of armed force, to restore and maintain the security of the North Atlantic area.
https://www.cbc.ca/news/world/poland-drones-shot-down-1.7629795
Poland said early Wednesday that it and its NATO allies had shot down Russian drones that violated Polish airspace in what it called an "act of aggression" as Russia launched aerial attacks on Ukraine — the first time in the war that Warsaw has engaged Russian assets in its airspace.
Polish Prime Minister Donald Tusk wrote on social media that, "Last night the Polish airspace was violated by a huge number of Russian drones. Those drones that posed a direct threat were shot down."