@MayDay:
Can planes fly over true neutrals, friendly neutrals (not taken over by a pro-ally), the Sahara Dessert and/or the Himalayas? I believe that this is prohibited, but I have seen some strategies where players are flying fighters from Calcutta to Moscow and from Calcutta to Jordan (turn 1). Is this possible? To fly from Calcutta to Moscow, a fighter would have to go over the Himalayas or Afghanistan. To fly from Calcutta to Jordan, a fighter has to go through Iraq or Saudi Arabia. I feel that I am missing something…
No to all. You cannot fly over impassable territories, and you cannot fly over neutrals (pro-axis, pro-allies or strict, no matter what, until they’ve been attacked or controlled by any player power at which time they’re no longer neutral)