Left-Wing Communism: An Infantile Disorder by Vladimir Ilyich Lenin is a critical work written in 1920 during the early years of the Soviet state. This pamphlet addresses challenges within the international communist movement, particularly the tendencies of left-wing radicals who rejected pragmatic strategies and the necessary compromises required for revolutionary success. Lenin uses this work to guide communist parties in their efforts to build socialism globally, offering insights drawn from the experience of the Bolshevik Revolution.