So, as far as I understand it, the rulebook for Europe states that if a country invades a "strict neutral" (that is, any neutral that doesn't specify if it is Pro-Allies or Pro-Axis) then ALL other strict neutrals go pro-"non attacking side." For example, let's say that Italy invades Greece. Greece is a strict neutral, so according to the rules, all of the other "strict neutrals" would now become Pro-Allies....
If the U.S. invades Brazil, why would Greece care, or Switzerland for that matter?
I do not play with these rules, since I think they don't make sense. What variations of this have you played?