As you now know, there are two distinct tags, one labeled soviet-union and the other ussr. Given that the latter stands for "Union of Soviet Socialist Republics", I propose to merge them, perhaps making one a synonym of the other.
Otherwise we could as well create independent tags for "cccp", "usa" and so on...
Note that anyone with a score of 5 or more on a tag can propose making it a synonym through the regular interface. Sadly, I'm not one of those people for ussr. I did have enough to do it on the soviet-union tag, so I've made the proposal there.
Hopefully this is an equal relationship, rather than a request to ditch that one tag in favor of ussr. The content of the soviet-union is frankly awesome, plus I think the term is better than using the acronym, so if I had my druthers I'd keep soviet-union as the main.
