An agreement is a contract. There is no such thing as a "formal agreement". As opposed to what? Informal agreements? On paper or verbal is irrelevant as both are valid.
In this case, the agreement was that NATO would stay where it was at the time this subject was discussed and agreed upon. Nobody sane would agree to exempt East Germany and OK NATO jumping over and landing in Poland and the rest of Eastern Europe. Duh. Only PF Russia haters can be that stupid.
The fact is that the West lies all the time - including Minsk as a delaying move and without any intent to stick to it.
And that is why Ukraine is a pile of uninhabitable garbage that will never be rebuilt unless Russia takes over the whole damn place as it did in Mariupol. In that context, you dumb Poles should wish Russia a quick victory.
Once Ukraine is made usable again, your esteemed guests will have a place to go back to. No, nobody will be executed or fed to the bears. See Crimea - the land that is Russia's forever.
The only thing we can criticize Gorbachev, the USSR, Putin, and Russia for is that they trusted Western son of a bit*ches, what they were told, and what they signed. So, today, Russia knows there is only one guarantee that Ukraine will not be in NATO: Russian troops at the Polish border.
very sad....
Hey, maf, worry about your body before you get to mine. In my coffin, I write better posts than you can now.