the best respons to a german ac built in the baltic is uk fighters.
uk purcase round1 and 2 3 fighters
then round 3 u can atack whith 9 fighters and 1 bomber, against 2 sub 1 tranny 1 dest and 1 ac 2 fighters. The calc says 99% chance whith 6 unit left.
and if germany purcase 1 ac in round 3, it has 4 fighters 2 subs 1 tranny 1 dest and 2 ac. Against 9 fighters and 1 bomber it gives uk a chance of 55% chance whih 1.78 units left. That is ok for the UK, uk fighters for germans, il trade any day. So in the 3 first rounds u need to invest 32 icp on navy, more if u want to be sure in cant be sunk.
In the mean time US is going trough the med treaten we, se, balkans, ukarine. The only area u dont trade is norway. The other problem is that germany can hold kardelia.
No presure from germany against russia eraly on will mean that japan will have a hard time.
u spent at least 32 icp the 3 first rounds and u only take a treat against norway away(usal u cant take EE anyway the 3 first rounds, what u can do if you stack kar.