Russia is a Communist country. It was a threat to the democratic countries in NATO and going nuclear only increased the threat.
What in the world are you talking about? Russia was a nominal member and obvious hegemon of the soviet union, but the soviet union fell.
It is not a communist country, the word "communism" means something and what it means is not "enemy of the CIA" even if you can be forgiven for getting that impression.
Communist government means a system which aims at collectivizing all production and property de jure or de facto. Not only does the Russian Federation make no such official claim, there are objective measurements for the "progress" towards communism, such as tax burden. Russia's tax code is one of the least communist in the world.
The PRC is a communist government both in name and by many of its policies, although it is more fascist than the USSR was. (note fascism is also not simply a synonym for "bad" it has characteristic definition both philosophically and economically)
The Russians are not fighting because they believe everybody should be communist, they're fighting because they've been told nazis are taking over the west. It doesn't help that there are so many pictures of obvious nazi symbolism on people claiming to serve Ukraine.
What Putin believes, knows, and why he attacked is not something I can figure out with public information; but this is not about communism.
The west and NATO countries would welcome a denuclearized Russia after Putin.
This is pure fantasy. The UK didn't trust the USA to be the sole party with nuclear weapons and they were as close allies as you are likely to see. Nobody is going to denuclearize so long as a single battalion can be raised by a possible invader.
It's something to work towards but world peace comes before world disarmament.
