"Left-Wing" Communism: An Infantile Disorder (Russian: Детская болезнь "левизны" в коммунизме, Detskaya Bolezn' "Levizny" v Kommunizme) is a work by Vladimir Lenin attacking assorted critics of the Bolsheviks who claimed positions to their left. Most of these critics were proponents of ideologies later described as left communism. The book was written in 1920 and published in Russian, German, English and French later in the year. A copy was then distributed to each delegate at the 2nd World Congress of the Comintern, several of whom were mentioned by Lenin in the work. The book is divided into ten chapters and an appendix. Lenin's manuscript was subtitled "A Popular Exposition of Marxist Strategy and Tactics", but this was not applied to any edition brought out during his lifetime. Source: Wikipedia (en)