Theoretical works of V.I. Lenin on the national issue played a huge role in the struggle of the Communist Party for the victory of the socialist revolution, in its creative activities to build socialism and communism in our multinational state. These works are also of great international importance. Communist and workers' parties of foreign countries in resolving the national-colonial issue apply in practice the main theoretical provisions developed by V.I. Lenin, taking into account the originality in the development of their countries.