In 1946 some of the members of the French section of the Fourth International (Trotskyist), including Cornelius Castoriadis and Claude Lefort, formed a grouping on the basis of a critique of orthodox Trotskyism: this was the “Chaulieu-Montal tendency.” With the formation of “SouB,” history repeated itself to some degree: just as Trotsky had founded the Fourth International in 1937 to fight against the Stalinist bureaucracy and its criminal policies, a group of militants left it some ten years later, turning part of its own diagnosis against it. This group criticized Trotskyism for its economism, its inability to correctly define the…