Throughout the 1980s, the Soviet Union fought an increasingly frustrating war in Afghanistan. At the same time, the Soviet economy faced the continuously escalating costs of the arms race. Dissent at home grew while the stagnant economy faltered under the combined burden. Attempted reforms at home left the Soviet Union unwilling to rebuff challenges to its control in Eastern Europe. During 1989 and 1990, the Berlin Wall came down, borders opened, and free elections ousted Communist regimes everywhere in eastern Europe. In late 1991 the Soviet Union itself dissolved into its component republics. With stunning speed, the Iron Curtain was lifted and the Cold War came to an end.
