The Baltic states are all members of NATO. Russia trying to invade any of them triggers article 5. NATO vs. Russia. If Russia cannot beat Ukraine, taking on NATO would be a disaster for Russia.
Baltic states are not defendable, NATO itself admitted that. Article 5 is a fiction. If we exclude nukes, Russia can roll into Baltic states tomorrow and NATO will do nothing. That's not me talking, that's your own military people talking.
Russia does not need any of that but in hypothetical situation, NATO will not defend Baltic states because that would be a suicide.
Baltic States purpose is to harass Russia, nothing more. They get instructions from Washington with what to say and when to say it.
They are totally dependent on EU financially and have to do they are told.
Article 5 again is a fiction, NATO is US, literally. Most NATO countries especially smallish Eastern Europe ones will not comply with it blindly. They will look at the situation and decide for themselves. NATO is not it was before expansion, politically and militarily.
New members were forced into it and their population is not as ignorant as older members, let alone US.
The whole Ukraine plan was to:
1. Provoke Russia into invading Ukraine
2. Use sanctions and oligarchs to regime change Putin.
actual war was not part of the plan A. Yes, you armed and trained these imbecile nazis. But not for actually defeating Russia. Merely for holding enough to take sanctions into effect. Plan was to suffocate Russia economically, and it failed miserably, hence Plan B, Plan C, Plan D, ......