When the Bolsheviks seized power in 1917, they set themselves the task of building socialism in the vast landscape of the former Russian Empire, a territory populated by hundreds of different peoples belonging to a multitude of linguistic, religious, and ethnic groups. Before 1917, the Bolsheviks had called for the national self-determination of all peoples and had condemned all forms of colonization as exploitative. After attaining power, however, they began to express concern that it would not be possible for Soviet Russia to survive without the cotton of Turkestan and the oil of the...