Great, now we’re getting somewhere -
It’s so confusing sometimes. I think I know how to respond to your latest post, after thinking about it again.
I believe I was correct in saying Russian-controlled territory attacked by Japan prevents Mongolia from allying with the Soviet Union.
If Japan jumps the gun and attacks, say, Amur before Russia has violated “the pact”, then Mongolia will never join Russia in the manner described on page 39 (standing army units placed on the board using Soviet pieces and Soviet control markers placed on Mongolia).
The last sentence on page 39 uses the language of “Mongolia will remain neutral and not ally itself with the Soviet Union” which is why I used it too. Others may call this “activation” of Mongolia - it is the same concept. We are talking about the same thing.