The first confrontation between the Left Opposition and the "triumvirate" occurred from October 1923 to January 1924 over industrialization policies. The "triumvirate" won decisively at the XIII Party Conference in January 1924. Following Lenin's death in January 1924, the confrontation between the Left Opposition and the "triumvirate" expanded more openly into a dispute over Trotsky's policies, with the "triumvirate" accusing Trotsky's policies of being "anti-Leninist". At the XIIIth Communist Party Congress in May 1924, the "triumvirate's" position was further strengthened at the Left Opposition's expense. Another confrontation took place from October to December 1924, during the so-called "Literary Discussion" and criticism of Trotsky's permanent revolution policy as Stalin proposed socialism in one country. This resulted in the removal of Trotsky from his ministerial post on 6 January 1925, although Stalin opposed Zinoviev's demand that Trotsky be expelled from the Communist Party.