Introduction -- The agrarian question in the Russian Revolution: from material community to productivism, and back -- 'Socialism in one country' before Stalin, and the origins of reactionary 'anti-imperialism': the case of Turkey, 1917-25 -- The Spanish Revolution, past and future: grandeur and poverty of anarchism: how the working class takes over (or doesn't), then and now -- Anti-capitalism or anti-imperialism? Interwar authoritarian and fascist sources of a reactionary ideology: the case of the Bolivian MNR.