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La Guerre du Petrole (1940)
(feddit.org)
For the map enthused!
Rules:
post relevant content: interesting, informative, and/or pretty maps
be nice
Slightly, but certainly not 90°. You can see this yourself by trying to match the map location in Google maps or OSM. I think the reason they tilted the map a bit, is that it makes it much smaller, while still keeping Crimea on the map.
You could also check the compass rose at the top to see that the vertical axis points towards NNW.