Germany starts with 2 guys up there, gets 4 for activating Finland, plus can transport 2 first round. Assuming said transport survives until turn 4 lets say, thats another 6 guys for a total of 14 troops up there when the US comes knocking. Those guys normally do not advance in my games unless they are needed, they sit in Finland as a threat to Russia.
A simple carrier buy lets you threaten sea lion to keep UK honest turn 1. Then you simply move back to the baltic if you have too, possibly adding a destroyer and a smattering of subs as you go. In the baltic your boats are pretty difficult to get too.
You start with 8 planes, should loose 2 at most on turn 1. You can easily purchase a plane a turn or so. Combined with a sub or two the UK/US is forced to have a respectable fleet to do landings.
Italy should hit 30 income around turn 2. Thats 10 ground troops to help cover and allows you to make difficult to kill stacks.
Germany has 3 production in france, 3 in Normady, and 10 right next door. It is very easy to place a few troops a turn there to build up and incase of a large threat do a large drop the turn before.
There are two main ways to threaten Russia, either with numbers or mobility and your income allows you to choose. Mech infantry with Italian can openers are extremely deadly, there 4 IPC blitzers in that regard. Ukraine is a great place for a large stack of 'em. Alternately, you can send 15+ inf/art at 'em and simply out produce them. They will start to loose money fast once war is declared between Germany, Italy, and Japan wailing on 'em.
AA40e bugoo vs jim 01bUK.AAM