it seems unfortunate that the tone of the article itself is a bit "cold-wary".
I'm not -at all!- making a stand for Stalin's pressure on science. But it does seem that some parts played by the US are not mentioned in this chapter.
Laurent Schwarz, for instance, if I am not mistaken, was not allowed to go to the ICM in the US for having communist (trotskyist to be specific) links.