allegory almanac andrei sakharov anti-sovietism anton chekhov boris pasternak censorship in the soviet union dissident fantastic fantastic stories france gangster georgy tovstonogov gulag igor tamm innokenty smoktunovsky jew khrushchev thaw konstantin paustovsky korney chukovsky larissa volokhonsky leo tolstoy leonid brezhnev lev artsimovich maria rozanova maya plisetskaya mikhail bulgakov mikhail romm moscow nikolai gogol oleg yefremov paris propaganda pseudonym pyotr kapitsa richard pevear russia russian language sintaksis sinyavsky-daniel trial stalinism vladimir mayakovsky yevgeny zamyatin yuli daniel