Some pretty good discussion here.
I don’t think the Soviet Union deliberately fell. But I do think that Communists everywhere decided that there was no way to prevent the fall. Russia was overextended, they couldn’t hold the Warsaw Pact states much longer, they were running out of money, and they were “contained” by America to the extent that they couldn’t spread any further by conquest.
So they regrouped. And, of course, there were covert and open Communists all over the world, especially in academia and some of the foundations.
Communism is an ideology, but it is also a very effective method of seizing and holding power. It uses whatever “fronts” will make it seem attractive—and thereby more powerful and influential. Helping the poor and downtrodden was the main meme, but as already mentioned, helping the environment is now another very important meme.
As I’ve said before, there’s nothing wrong with helping the environment, or helping the poor. The question is, how do youo do it? Are you really concerned to help, or is it just a method that will help to destroy “capitalism” and freedom and concentrate power in the hands of an elite? The Communist term for that elite is Vanguard of the Proletariat. Who knows? Maybe they’ll soon be coming up with a new one, the Vanguard of the Polar Bears. Greenpeace, for instance.