Who promoted glasnost?

Glasnost, meaning "openness," was promoted by Mikhail Gorbachev, the General Secretary of the Communist Party of the Soviet Union from 1985 to 1991. He introduced this policy as part of broader reforms aimed at increasing transparency in government, encouraging public debate, and allowing greater freedom of expression in the Soviet Union. Glasnost was a key component of Gorbachev's efforts to revitalize the economy and reform the political landscape.