So was East Germany, what is your point? The Soviet Union is no longer anything but a memory.
Are you really defending Russia attacking their neighbors to be able to take those nation's territory?
Russia like China and Argentina etc have been vocal about reclaiming what they consider to be there's. With a global population that is rising exponentially we can expect to see more of it. Just like the U.S oil wars we have seen the last decades food and water will be the next ones.
I'm not defending anything. Chatting about what is and may come about is not siding with anyone but as we all now History often repeats and with "leaders for life" legacy is often all encompassing.
In regard to your phrase "Nations territory" all i can say is its a shame that groups of people starting dictating that they own a given slice of area, you would think we would be smarter than our animal friends but sadly we are not.
Just on Russia. IDK if you have been, I haven't but my mum went there about 5 years ago for a Bridge Tournament (her and her partner won). She came back raving about the place. According to her the areas she went to, mainly Moscow and St Petersburg, are beautiful with the best dressed people in Europe (mum loves clothes and Milan is her number 2 for best dressed women), no litter or graffiti, and exceptionally friendly people and up to date infrastructure.