The monograph of Doctor of Philosophy I.P. Tsameryan is a serious scientific study of the laws of education and development of the Soviet multinational state in the philosophical and sociological aspect. The book explores the crucial importance of the Marxist-Leninist doctrine of nations and national relations as the theoretical basis for the education and development of the USSR; the essence of the Soviet socialist federation as the embodiment of the principles of proletarian internationalism; the structure and national composition of the USSR; the development of socialist nations, national relations and the Soviet multinational state at the present stage of communist construction.