The book "Left-Wing Communism: An Infantile Disorder" was written by V.I. Lenin for the 2nd Congress of the Communist International and was given to all the delegates of the Congress to help the young communist parties find the right path of revolutionary struggle, to correct the mistakes of their first steps, to acquaint communists of all countries with the rich experience of the Bolsheviks, with their strategy and tactics, so that the fraternal parties could be equipped with it.

Lenin exhaustively examines the issues of revolutionary tactics and boldly addresses problems such as parliamentarism, the party's stance towards social democratic parties, trade unions, etc., while simultaneously equipping the reader with the ability to understand the international situation...