wwi eastern front

As we all know, Operation Barbarossa was a military plan which resulted in the Germans taking huge portions of the Soviet land to the point that major cities like Leningrad and Moscow were threatened. Of course, Ukraine, Belarus, Baltics and even Northern Caucasus was occupied. But what if the...

So, assume that the Central Powers win WWI. How likely would it be for the Austro-Hungarian Empire to annex Serbia (minus Macedonia) and Romania? And perhaps also Montenegro? Did the austro-hungarian leadership consider such actions? For what reason would they do such? To remove outside actors...

IOTL There nearly was such an attack against Sweden. There was an old TL about this but it ended prematurely a few years ago. The attack itself was to take place in the beginning of August IIRC right after Britain declared war. Sweden's Navy at the time consisted of alot of coastal defense...