It is a particular ideological discourse being formed in recent years in post-Soviet Russia, that is analyzed in the article. On defining this discourse, based on running to extremes in the nash - ne nash (our one - not our one) differentiation which is, as such, usual for any social and political group formation, as nashism, the author elicits and analyzes in detail the following three forms of modern nashist discourse: nationalist nashism, in the framework of which it is belonging to the political civil nation now being formed in Russia, that is recognized as criterion of attribution to the nashi (our ones); ethno-nationalist nashism supplementing the civil principle with the ethnic one; and racist nashism that accentuates the anthropological differences. According to the author's conclusion, all the three versions of nashism have enormous destructive potential in them, and if pressing them off to the ideological periphery fails, then out of the two scenarios of Russia's development possible today: consolidation of the statehood, and its disintegration, it is exactly the latter that will happen to be realized.