In the book, Conquest disputed the assertion made by Nikita Khrushchev and supported by many Western leftists, namely that Stalin and his purges were an aberration from the ideals of the Revolution and were contrary to the principles of Leninism. Conquest argued that Stalinism was a natural consequence of the system established by Vladimir Lenin, although he conceded that the personal character traits of Stalin had brought about the particular horrors of the late 1930s. Neal Ascherson noted: "Everyone by then could agree that Stalin was a very wicked man and a very evil one, but we still wanted to believe in Lenin; and Conquest said that Lenin was just as bad and that Stalin was simply carrying out Lenin's programme".