"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.
Any such armed attack and all measures taken as a result thereof shall immediately be reported to the Security Council. Such measures shall be terminated when the Security Council has taken the measures necessary to restore and maintain international peace and security."
Ok, all other members "assisted" Finland "as they deem necessary". No one sent armed forces, to prevent provoking friend Vlad or else... And why even bother, there is no fighting in Finland, Ruzzian force is standing guarding the city and is digging in. Why provoke Putin then if no one is getting hurt. Instead they are all collectively pressuring and blackmailing Finland to not counterattack.
Rational people still, in 2026, operate under a notion that Putin has some definitive target. Well, he does not, the invasion IS a target. The process is a target. So while the war goes on, the whole operation is a success to him personally.
Same with hypothetical NATO invasion. It's target won't be neither victory over the alliance, nor any gains in territory or cities. The point would be to create a permanent ongoing invasion(s) inside NATO member's borders and sustain it.
As it is it's kind of a mess with many dead on both sides.