International Workers League – Fourth International
Morenist Trotskyist international organization

The International Workers League (Fourth International) (Spanish: Liga Internacional de los Trabajadores (Cuarta Internacional), or LITci; Portuguese: Liga Internacional dos Trabalhadores - Quarta Internacional, or LIT-QI), also known as IWLfi, is a Morenist Trotskyist international organisation.
Overview
The group's origins lie in the International Committee of the Fourth International (ICFI). Moreno's supporters followed the American Socialist Workers Party in leaving the ICFI in 1963 to form the reunified Fourth International (USFI). In 1969, the USFI voted to support guerrilla war in Latin America. Moreno's group opposed this.
While critical of the Sandinistas, Moreno's group sent a Simon Bolivar Brigade to Nicaragua to aid the Civil War, with the aim of building a revolutionary party there. This brigade was opposed by the reunified Fourth International because it operated outside the discipline of the FSLN; the only other Trotskyists to participate were Pierre Lamberts' Organising Committee for the Reconstruction of the Fourth International. Forty non-Nicaraguan members of the Brigade were expelled from the country by the FSLN. Almost immediately, Moreno's and Lambert's tendencies joined to form the Parity Committee for the Reconstruction of the Fourth International. However, Moreno's supporters withdrew in 1981 complaining that Lambert had links to trade union bureaucrats, and in 1982 formed the "International Workers League (Fourth International)". In addition to their former supporters, this also attracted groups in Peru and Venezuela which split from the Lambertist currents.
“International Workers League – Fourth International” enters the record as morenist Trotskyist international organization. Crown Archives preserves that source wording while asking what International, Workers and League can confirm, complicate or overturn.
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Chronology, provenance and viewpoint should be read together before a broad social or political interpretation is accepted. The source revision retrieved here is dated Aug 17, 2026. The linked authority identifier is Q599328. VIAF identifies the subject as 153410421. 1 of 2 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1963, 1969, 1981 and 1982.
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This entry incorporates text from “International Workers League – Fourth International” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.