 During the Soviet era, five separate editions of Lenin's published works were published in Russian, the first beginning in 1920 and the last from 1958 to 1965; the fifth edition was described as "complete", but in reality had much omitted for political expediency.After Stalin's death, Nikita Khrushchev became leader of the Soviet Union and began a process of de-Stalinisation, citing Lenin's writings, including those on Stalin, to legitimise this process.When Mikhail Gorbachev took power in 1985 and introduced the policies of "glastnost" and "perestroika", he too cited these actions as a return to Lenin's principles.