No, it wasn't, though much of it was politically, through conquest, part of Russia for a couple centuries (and a bit more of of it for just over one century) prior to the formation of the USSR, and there was certainly an intense effort by Russia to colonize Ukraine with Russians to break it's distinct culture during that period where much of it was under the Russian imperial rule.

Clearly, you view Russia’s own territory as anything that has ever in the past been subjugated by Russia independently of where modern nation-states lie, and in that respect, sure, Russia may be primarily concerned with fighting wars to re-establish empire in those places.

But that's not a sign of a peace-loving nation, but instead of a warmongering imperialist one that prioritizes restoring it's “glorious” past.