Restrictions on Travel and Commerce before TDM

[kato13]

Thinking about how there is restricted travel movement in Africa now, led me to think about how the war would have affected travel worldwide.

The first case I come up with is Sweden, given they are trapped behind Norway and surrounded by seas that would be active war-zones would they be effectively isolated after November 1996?

Would civilian flights have been shot down in certain areas?

Are there any other Neutrals which would be severely effected?