18th Congress of the All-Union Communist Party (Bolsheviks)

The 18th Congress of the Russian Communist Party (Bolsheviks) was held during 10–21 March 1939 in Moscow. It elected the 18th Central Committee.

This is the first Congress to be dominated by the "purified" leadership of the Soviet Union after the Great Purge. This would be the last one held for over a decade.

In the report on the work of the 17th Central Committee of the Communist Party Stalin outlined important aspects of the foreign policy of the USSR, particularly its disappointment with the western democracies and their failure to adopt the policy of collective security advocated by Soviet foreign minister Maxim Litvinov. Shortly after this, Stalin dismissed Litvinov and appointed Vyacheslav Molotov, a move that led to the Molotov-Ribbentrop Pact and a temporary understanding with Nazi Germany.

The report of the Central Committee of the All-Union Communist Party (Bolsheviks) consisted of an analysis of the internal and international situation of the country, as well as its future development perspectives. The Congress took note of the now prevailing socialist mode of production and considered socialism in the USSR to be largely built, while in its view the country was already sailing towards a new step of development, i.e. the completion of the socialist society. A new goal was set: to catch and get ahead of the most developed capitalistic States. The report also tackled theoretical questions regarding the stages of development and functions of the socialist State, and viewed as erroneous the idea that the State would be soon extinct.

The Congress sanctioned the new Party's statute which was supposed to reflect changes in the class structure of the Soviet society. A unified set of conditions for entry in the All-Union Communist Party (Bolsheviks) was implemented, as well as a one-year probation period. An exception was made for former members of other parties, to which these conditions would not apply. The division into separate categories depending on each individual's social class origin was abolished. Articles defining new rights for the Party's members were also added.

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