Or let’s say Russia wants to attack the Ukraine stack on Round 2. They are looking at 16% chance to capture. 21% with sacrificing fighters.
But if Germany does not drop the extra infantry and AA gun via Med transport then its odds are 43%
I will let you think about if there is a better course of action here.
8 infantry build round one with Russia? 4 infantry 3 Artillery? UK does not drop fleet and sends fighters? US sends its fighters to West Russia?
These things could reduce Germanys odds on West Russia enough perhaps that Germany does not attack, but I do not think they can be reduced enough for Russia to capture Karelia without giving too strong of odds on West Russia.
The 3 tank build is a contingency against Russia Karelia stack somewhat.
I have seen players stack Karelia and Belarus thus blocking the tanks in Ukraine from counter attack, but 7 tanks from Poland and Berlin makes such a move risky as well, although Germany will lose higher TUV in this battle due to not much infantry shield. Usually 2 infantry from Finland and one from Baltic is all that is available for that counter, and maybe this is the way for Russia.
But such a move then opens up G2 Caucus stack with Japans fighters landing on.