Re: If Nazi's had not been defeated space timeline reasonable?
There are horrifying parallels in our time and in countries that we tend to consider as civilized.
Our era is apparently keen to experiment with how exactly it can reproduce the preconditions that led to historical fascism (and revolutionary communism) from governmental gridlock to rotting zombie-economies propped up by Pinkertonian authoritarianism to rampantly idiotic gilded-age neo-aristocracy... I guess in a sort of blind bet that none of the really bad stuff will happen again because of reasons
This however has nothing to do with whether the alternate timeline is plausible.
"The real and lasting victories are those of peace, and not of war." - Emerson