Glasnost is a concept relating to openness and transparency. It has several general and specific meanings, including a policy of maximum openness in the activities of state institutions and freedom of information and the inadmissibility of hushing up problems. In Russian the word 'гласность' has long been used to mean "openness" and "transparency". In the mid-1980s, it was popularised by Mikhail Gorbachev as a political slogan for increased government transparency in the Soviet Union within the framework of perestroika, and the calque of the word entered into English in the latter meaning.

Mikhail Sergeyevich Gorbachev was a Soviet and Russian politician who served as the last leader of the Soviet Union from 1985 to the country's dissolution in 1991. He served as General Secretary of the Communist Party of the Soviet Union from 1985 and additionally as head of state beginning in 1988, as Chairman of the Presidium of the Supreme Soviet from 1988 to 1989, Chairman of the Supreme Soviet from 1989 to 1990 and the only President of the Soviet Union from 1990 to 1991. Ideologically, Gorbachev initially adhered to Marxism–Leninism but moved towards social democracy by the early 1990s.