…And the invaders were bolstered by support via rail through Sweden.
https://en.wikipedia.org/wiki/Transit_of_German_troops_throu...
https://en.wikipedia.org/wiki/Transit_of_German_troops_throu...
Only the notion that a country not in a hot war has no state secrets that can jeopardize security. Or just jeopardize the sitting government, this is a propaganda campaign after all.