'In terms of Russian cultural history, the 1920s have been more attractive to western intellectuals than the 1930s and 1940s. A cultural avant-garde flourished in the NEP decade, and innovative works in cinema, art, literature and music have fascinated even those critical of other aspects of Communism. [...] The avant-garde was replaced in the 1930s, in a cultural 'retreat', by something much more conservative. The new culture would be ridiculed in the west'