Communist Party of the Soviet Union reinvigorated the party ideology by adding new concepts and updating older ones. A positive consequence of this was the allowance of "pluralism of thought" and a call for the establishment of "socialist pluralism" (literally, socialist democracy). He introduced a policy of "glasnost" (Russian: "openness", "transparency") in 1986, which led to a wave of unintended democratization. According to Russian scholar Archie Brown, the democratization of the Soviet Union brought mixed blessings to Gorbachev; it helped him to weaken his conservative opponents within the party but brought out accumulated grievances which had been oppressed during the previous decades. In reaction to these
Mikhail Gorbachev remove Gorbachev from power and prevent the signing of the new union treaty. Under the pretense that Gorbachev was ill, his vice president, Yanayev, took over as president. Gorbachev spent three days (19, 20, and 21 August) under house arrest at his dacha in the Crimea before being freed and restored to power. However, upon his return, Gorbachev found that neither Union nor Russian power structures heeded his commands, as support had swung over to Yeltsin, whose defiance had led to the coup's collapse. Furthermore, Gorbachev was forced to fire large numbers of his Politburo and, in several cases, arrest