"The Mussolini regime's inability to overcome its rightist compromises, together with its doctrine and origins dissimilar from those of the Nazis, precluded any full convergence between the Mussolini and Hitler regimes. In turn the Hitler regime, in its rejection of Marxism and materialism and the formal principle of bureaucratic totalitarianism, did not take the same form as Russian communism. in spite of theories by critics about a supposed common totalitarianism. Some of the similarities and parallels include: Frequent recognition by Hitler and various Nazi leaders (and also Mussolini) that their only revolutionary and ideological counterparts were to be found in the Soviet Union."