Ukraine has 45M people. To flip it from being a Ukrainian majority to a Russian majority state wouldn’t that mean migrating 10-20M Ukrainians out and 10-20M Rus

Ukraine has 45M people. To flip it from being a Ukrainian majority to a Russian majority state wouldn’t that mean migrating 10-20M Ukrainians out and 10-20M Russians in? That sounds like a huge operation. Otherwise you have a South Africa situation where a minority rules over a majority and it’s just a matter of time before the majority takes back power.