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Fourth International–Posadist

Trotskyist faction founded 1962 by J. Posadas

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General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionAug 6, 2026
Entity authorityQ3413640
Source-derived summary

The Fourth International–Posadist (Spanish: Cuarta Internacional Posadista) is a Trotskyist international organisation whose followers are known as Posadists (). It was founded in 1962 by J. Posadas, who had been the leader of the Latin America Bureau of the Fourth International in the 1950s, and of the Fourth International's section in Argentina.

Between their split from the International Secretariat of the Fourth International in 1962 and Posadas' death in 1981, Posadists developed a strain of communism, known as Posadism, that included several fringe ideas, which brought them into conflict with more mainstream left-wing groups.

Posadism attempts to introduce elements of ufology into Marxist thought. Arguing that only communism can allow the development of interplanetary travel, they concluded that visiting aliens from other planets must live in highly advanced communist societies and are bound to help Earth-based communists with bringing about the world revolution.

History

Origins

When the Fourth International (FI) split in 1953, Posadas and his followers sided with Michel Pablo and the International Secretariat of the Fourth International (ISFI). The Posadists began quarrelling with the majority of the ISFI in 1959 over the question of nuclear war with Posadas being a proponent as, he claimed, it would destroy capitalism and clear the way for socialism. The Posadists finally split with the ISFI in 1962 to form the Fourth International (Posadist). The group initially had a following in several countries, particularly among railway workers in Cuba, tin workers in Bolivia and farm workers in Brazil.

There was a significant Posadist group in Cuba.

Editorial summary

Begin with the source’s own compact description: “Fourth International–Posadist” is trotskyist faction founded 1962 by J. Posadas. The dossier treats that line as a proposition to test through Fourth, International and Posadist, not as a finished interpretation.

Editorial reviewA practical starting point whose main value is the path it opens into stronger specialist and primary sources. The current lead gives the account dated anchors—1962, 1981, 1953, 1959—that can be checked directly. The linked authority record independently contributes the date 1962. For this dossier, Fourth, International and Posadist is the immediate research focus.
Editorial analysis

Why this record matters

The phrase “trotskyist faction founded 1962 by J. Posadas” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.

Evidence profile

The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Aug 6, 2026. The linked authority identifier is Q3413640. VIAF identifies the subject as 136484927. The Library of Congress control number is nr94019183. 1 of 4 selected statements include explicit references; 1 carry qualifiers and 0 use preferred rank. The first chronological checks are 1962, 1981, 1953 and 1959.

Critical limits

The absence of detail may reflect summary conventions rather than a lack of surviving documentation. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

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Source & attribution

This entry incorporates text from Fourth International–Posadist” 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.