Anyone who read Mein Kampf, would have known that Hitler never thought Czechoslovakia should have been a country in the first place, it was the "bastard child" of the Versailles Treaty, only there for Britain and France to keep Germany in check. That's pretty much how he felt about all of the countries that were spawned by the breakup of the Austro-Hungarian Empire after the war. Much like how Putin goes on about the breakup of the Soviet Union. Now perhaps Hitler had some valid points there, as does Putin, so the question is, what rights does a nation have to rectify the past? At the time, many did think Hitler had some justification for the Sudenten Germans, but they didn't understand what Hitler's true intentions were, although he pretty much laid them out in Mein Kampf, years before. So what of Putin? Does he really want to rebuild the Russian Empire? Or is truly Ukraine the only hill he's willing to die on?
Indeed.
And yet today the Czech Republic and Slovakia are separate nations as agreed in 1993. Since then they have amicable relations, different languages being among the distinctions. Both were a part of what was once the Austro-Hugarian empire, so borders have changed and changed again, as has governance. And both, though having gone through their "Velvet divorce," cooperate as members of the European Visegrád Group.
I worked a while in Prag, and recommend seeing the city center.
Re: So, what of Putin?
I do not know enough Russian history to speculate.
I do know that over the last five centuries, Ukraine has had many occupiers.
Turks, Asians, Poles, and, of course, Russians.
Putin is a tough guy. He knows that NATO is not going to risk nuclear war over Ukraine.
Expansion into the Baltic countries, maybe?
The Belarus leadership seems to want union with Russia. I have never understood why that has not happened.
Communists definitely perceive more land and more population as an intrinsic good.