I move the TRN in SZ 40 with the two troops to India where if the timing is right I build an IC.
As far a s Russian troops I mass all the troops from SFE (2 INF) and Buryat (2 INF) in Yakut (2 INF for a total of 6 INF. Maybe move a tank from Moscow. It works but be advised itâ€™s a temporary solution. It will only work a an effective barrier until Japan has a bigger force next to it.
Itâ€™s important to hold China as long as you can. The reason for this is you want Japan to have a multi front with your territories. If you hold China they will have to defend and hold French Indo-China, Kwengtâ€¦, and Manchuria, as apposed to you holding up in Sinkiang and Japan only having to defend China.
Thatâ€™s what I do as far as Japan goes. Axis countries have a lot of assets and a smaller economy base. For them to have any hope of wining is to match or exceed the income of their allied rivals. In order for you to prevent that you need to contain them in a timely manner.