@Blackychan
From the Europe 1940 Second Edition rulebook, Page 15, bluebox “Powers Not at War with One Another”:
“Neutral Powers: When a power is not at war with
anyone, it is neutral. Powers that begin the game
neutral, such as the United States and the Soviet
Union, aren’t initially part of the Allies or the Axis.
The Axis powers are on the opposite side of these
neutral powers, but they are not yet considered
enemies. While a power remains neutral, it operates under even tighter restrictions. A neutral power
can’t move land or air units into or through neutral
territories. It can’t move units into or through territories or onto ships belonging to another power or
use another power’s naval bases, nor can another
power move land or air units into or through its territories or onto its ships or use its naval bases.”
Oztea’s 1939 rules are generally built upon these mechanics.
https://store-kftzvkkgjv.mybigcommerce.com/content/File Storage for site/Rulebooks/Axis Allies/A%26A_Europe1940_2ndEd_Rulebook_WEB.pdf
Update:
I just remembered that to simulate the Molotov-Ribbentrop Pact, there are some pro-Axis and pro-Allied territories that the Soviet Union can march into before they’re at war. In those cases, I agree with Barnee that the bonus applies.
Sorry for forgetting and misunderstanding.