The Internationalist Workers Party (Parti ouvrier internationaliste, POI) was a French Trotskyist party established in 1936 after the exclusion of militant Trotskyists from the French Section of the Workers' International in 1935 and dissolved in 1939 when most of the militants had rejoined the Workers and Peasants' Socialist Party. It was an official section of the Fourth International.
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Internationalist Workers Party Wikipedia(Text) CC BY-SA