Sakharov devotes more than 1000 pages to constructing an argument that few but the most ardent Stalinists find compelling.
I would like to ask what exactly the passage in bold means. I undrestood it that the argument is found compelling only by few people and these ones are just the ardent Stalinists. But my – may be wrong – understanding is based on the context of the sentence. From from the reading the very phrase I am not sure.