Glasnost is a Russian term meaning "openness" and refers to a policy introduced by Soviet leader Mikhail Gorbachev in the 1980s. It aimed to increase transparency in government institutions and promote freedom of expression. This policy allowed citizens to discuss political issues more openly and encouraged a more honest media. The implementation of glasnost led to significant changes in the Soviet Union, including a reduction in censorship and greater public participation in political discourse. It played a crucial role in the eventual dissolution of the Soviet Union by fostering a climate of reform and encouraging demands for greater democracy.