What would it take for all of Scandinavia, possibly organized around something called the Nordic Council or similar, to be a co-belligerent of Nazi Germany during World War II?
The general position here is that there were more Germanophiles less concerned with what kind of regime actually were in Germany than most people would like to remember. IE, they weren't necessarily fascists in Sweden, just nazists in Germany. Not that there weren't full-blown nazists and general anti-semite authoritarians around, though oddly most of the organisations of them seemed to be of the Strasserite tendency.A Nazi puppet state comprised of Denmark, Norway and Sweden run by local fascists and formed around a pan-Scandinavian and Nazi ideology, using the Kalmer Union flag with a swastika stuck on it.
Now I’m not saying this would be an effective or loyal Nazi ally but it’s sure as hell the only way Sweden will ever turn crazy enough to attack to attack Russia. The Germans could likely sqeeze out quite a few SS divisions and the ''Scandinavian Army'' might be more effective than you’d think and would be a Nazi ally this case. There were more fascists and other unpleasant people running around in Sweden at the time than most people would like to remember.