I've listed this article for peer review because I think is a pretty good article and just wanted to see what others think can be improved. It was last reviewed in 2006, which is a lifetime ago!
There are a lot of short paragraphs that should be merged into longer ones.
Some things are missing inline citations. Some examples of this:
The brief alliance and subsequent invasion may allude to the Molotov–Ribbentrop Pact and Operation Barbarossa.[original research?]
In his London Letter on 17 April 1944 for Partisan Review, Orwell wrote that it was "now next door to impossible to get anything overtly anti-Russian printed. Anti-Russian books do appear, but mostly from Catholic publishing firms and always from a religious or frankly reactionary angle."
Although not required, I personally would try to reference the plot inline to reliable sources. This step improves verifiability.
The citation styles used are a total mishmash. Pick one style and stick with it.
A considerable amount of the references are to online WP:UGCorWP:SPS, therefore not qualifying as RS.