“That was against the USSR. It doesn’t exist any more.”
It absolutely does. If there was no continuity between the USSR and the Russian Federation then the Russian Federation would not be laying claim to things that never belonged to them.
Such as Georgia, Moldova, Ukraine, Crimea, Poland, etc.
Or, of course, you can insist that the Russian Federation is indeed wholly disconnected from the Soviet Union and that it should renounce all claims to nations and lands that the USSR ceded to other countries prior to the existence of the Russian Federation.
Those countries were part of Russia prior to the USSR.