In 1981, after the electoral victory in France of the popular front lead by Francois Mitterrand and the support to it by the OCI(u) led by Pierre Lambert, the Fourth International (International Committee) was in a process of splitting. This article deals with the policies for the popular front left to us by Lenin and Trotsky, the policies of the OCI(u), what are the sectarian, opportunist, and Leninist-Trotskyist policies.