How could he be writing about global nuclear war in 1936...
when nuclear weapons didn't exist until 1945? Was he that much of a "genius"? Somehow, I doubt it.
As for the "better red than dead" argument, history proved time and again that it wasn't an either-or proposition. Most if not all of the countries that went communist went through mass purges that resulted in about 100 million deaths. Ask the people of Cambodia about it.