Scenario: Russian Invasion of the Baltic States

[Airborne Rifles]

Was thinking about this issue the other day, and an idea for a series of scenarios or a campaign popped into my mind. Here's what I was thinking:

Russia has invaded and occupied the Baltic States and is fortifying their gains. NATO is mobilizing in Poland to both prevent further aggression and to lay the groundwork for a counteroffensive into the Baltics and Kaliningrad. The threat of nuclear escalation has been stymied by unequivocal statements by the US, UK, and France that NATO will respond in kind of Russia crosses that threshold. So now what remains is for NATO to launch their difficult effort to reclaim its member states.

Except there may be another option. The NATO alliance manages to convince a nervous Finland to join the war against Russian aggression. The US, supported by several other NATO members, rapidly deploys a sizable force to Finland in order to launch an offensive towards St. Petersburg. If NATO forces can occupy Russia's second largest city, they will have a powerful bargaining chip to lay on the table to convince Russia to withdraw from the Baltics.

I think this would be a very interesting basis for a series of scenarios, with NATO on the offensive for a change. I might try to tackle this when life slows down. Thoughts?