Therefore Ukraine needs to acquire nuclear weapons.
Do I think Ukraine would like to hold a press conference at which they show the media a set of nuclear weapons that they will use against Moscow should there be anymore attacks on Ukrainian cities? Yes, they would like that. I don't think that the West will willingly allow that.
Does Iran want to acquire nuclear weapons (if they haven't already)? Absolutely. Would Taiwan want to acquire nuclear weapons? Probably.
Why do Pakistan and India both have nuclear weapons? Because they both believe that MAD will prevent the use or large scale invasion of their country.
That would be high on my list of priorities if I were in charge of Ukraine.
Then Cuba, Venezuela, and Nicaragua are going to have nuclear weapons as well.