This is not about Ancient Greece/Rome/Russia/etc. My comment was: you cannot cherry pick which moment in History, a country's borders are convenient to you. I remember talking to a colleague from Poland that was proud that X centuries ago, Poland (or whatever the country/nation was called at the time had conquered big parts of then-Russia, even conquered Moscow. If we all think like that then a WW3 (Romans, Nazis, Mongols, etc.) is certain.

Let's stick to the borders we got, and in the future let's rener them useless (e.g. European Union).

I believe in a Star Trek society. Not "we kicked butts back then so let's get back those lands".