Lenin's book “The Childish Disease of ‘Leftism’ in Communism” is an outstanding theoretical work, which summarizes the gigantic historical experience of the Bolshevik Party and the experience of the world communist movement. In his book, Lenin further developed the cardinal problems of Marxism - the doctrine of the dictatorship of the proletariat, the leading role of the Communist Party in the revolutionary struggle and the building of a new society, the position on the correlation between the international and the national in the labor movement, developed the strategy and tactics of the international communist movement in the new historical epoch.

The Great October Socialist Revolution, which marked the beginning of mankind's deliverance from the exploitative system and the transition from capitalism to socialism, is the greatest event in world history. There is not a single significant phenomenon of social life that has not been influenced by it. With particular force the influence of the Great October Revolution has affected the struggle of oppressed peoples. “The Great October Socialist Revolution dealt the strongest blow to the entire system of imperialist colonial domination, was a powerful stimulus to the development of the national liberation movement”, a turning point in its development. It proved the real possibility of complete national liberation of peoples, opened to them the prospect of social progress, awakened them as an active independent force in international life and marked “the advent of the era of liberation of oppressed peoples”.

The XXII Congress of the Communist Party of the Soviet Union, which set the majestic task of building a communist society within twenty years, went down in history as a congress that raised the banner of humanism high. The new Party Program adopted by it convincingly revealed before all mankind the inseparability of peace and communism. “To destroy wars, to establish eternal peace on earth,” it says, ”is the historical mission of communism."

The revolution of 1905-1907 raised to active political life and struggle millions of masses of workers, peasants, urban poor, small urban and rural bourgeoisie. An integral part of the all-Russian revolutionary movement were the revolutionary speeches of sailors and soldiers and the national liberation struggle against the tsarism of oppressed peoples, inspired by the heroism of the working class of Russia. Revolutionary sentiment embraced the student youth and the democratic intelligentsia.