Does Ukraine get an exception from the general advice against invading Russia? Winter is coming. But they kinda have some advantages over prior attempts.
Yes they do get an exception because they are just as familiar to the climate as the orcs. It's not like Kursk et al has proper defenses RUs can hole up inside. The orcs literally just lost the Kursk battallian HQ building lol (forgive the leddit link)
I would say if they are just disrupting rather than trying to hold it, they would be in much more sane shape than the historical advice that mostly applies to would-be conquerors. Even if they are trynig to hold it as a bargaining chip, it's probably less ambitious than the historically usual goal of trying to conquer "Russia".