@Bruda_Iz:
It sounds good… the only weak part is that it relies on the Russian player to be complacent. I would imagine that you would get someone once with that but probably not twice. Other than that it sounds like a pretty good plan for all the points you mentioned.
I agree if it happens it will only be once, but the big question is how to deal with 18 inf sitting on your boarder? I think they have to be dealt with in the early rounds of the game, otherwise Russia will just wait until the air force is out of range and attack. As Japan trying to defend by Manchuria and Korea against 18 inf would take at least 8 or so inf in each territory, and that is something Japan cannot afford to do. They could also abdandon Korea and beef up Manchuria, to try and stop Russia from getting to the rest of Asia, but then Russia could drop an IC and it would be all over for Japan.
The more I think about it, capturing Amur J1 and defending it will be the best idea for Japan. Another bonus by holding Amur is that Russia won’t get it IPC bonus for capturing original German territories.
@Piazza2425:
If I was japan, i’d consider going through the empty territories of Mongolia to get to the Russian territories that do not have any men in them.
Given the true neutral rules I would be aprehensive about doing that, but the issue is not about taking Soviet territories, it is about securing Japan’s northern flank.