Perestroika was a political and economic reform movement initiated by Soviet leader Mikhail Gorbachev in the mid-1980s. It aimed to restructure the Soviet economy by introducing elements of market-oriented policies and decentralizing economic control. Alongside glasnost, or "openness," which promoted greater transparency and freedom of expression, perestroika sought to revitalize the stagnating Soviet system but ultimately contributed to the dissolution of the Soviet Union in 1991.