The Internationalist Communist Party was created in March 1944 by the merger of several Trotskyist groups, representing around 500 militants,[1] in particular: The negotiations were prepared by the Greek Michel Raptis, alias "Pablo".
The UCI (Union Communiste Internationaliste, or Barta Group) refused to merge with the other Trotskyists, and later gave birth to Lutte Ouvrière.
[2][3] However, in May 1942, a representative of the Paris section met in the free zone members of the group of Austrian Communist Revolutionaries in exile in France.
The latter would later become president of the Federation of the Alpes-Maritimes of the PSU, other members of this tendency such as Jean-René Chauvin, joined the RDR and were excluded on the grounds of this dual membership.
[6] However, it was joined from 1956 by PCF activists from the “La Voie communiste” group (which included Félix Guattari, by entryism) following the publication of the Krushchev report, the Hungarian Revolution, and the worsening of the Algerian War.
This was then dissolved in 1973 by the Minister of the Interior Raymond Marcellin following an attack on a New Order meeting, before re-forming under the name of the Revolutionary Communist League (LCR) in 1974.