It theoretically could, but… why would they do that?
And before you say “Ukraine”, consider that Ukraine and Russia have a common history going back hundreds of years and together with Russia were part of the USSR. The attack on Ukraine is illegitimate, but at least it makes some logical sense.
Russia going after Romania or Poland which are part of EU and NATO and were never part of the USSR, but instead individual countries in the Warsaw Pact makes no sense at all.
The Baltics are more complicated, but once again - NATO and EU.
And before you say “Ukraine”, consider that Ukraine and Russia have a common history going back hundreds of years and together with Russia were part of the USSR. The attack on Ukraine is illegitimate, but at least it makes some logical sense.
Russia going after Romania or Poland which are part of EU and NATO and were never part of the USSR, but instead individual countries in the Warsaw Pact makes no sense at all.
The Baltics are more complicated, but once again - NATO and EU.