Yes, it’s any 2 Soviet cities. Cities are only territories in the shape of a circle (or semi-circle on coastlines). We tried to remove all of the other city names from the V-2 map and replace them with regional names.
Murmansk does not have a circular territory and therefore is not considered a city territory. It exists in the territory of Kola. The only reference I’ve seen for those types of cities like Vladivostock and Murmansk is Red Cities in the Elite of the Soviet Union expansion set. I think they were probably put there for aesthetics.