Gorbachev served as general secretary of the Communist Party of the Soviet Union, in effect its leader, and in 1990 he became the Soviet Union’s first president.
Under his rule, the Soviets began withdrawing troops from Afghanistan in 1988, ending a disastrous 10-year military campaign that saw 15,000 Soviet soldiers and about 1 million Afghan civilians killed.
He was awarded the Nobel Peace Prize in 1990 for his efforts at arms control in which he and President Ronald Reagan agreed to the first reductions in nuclear stockpiles between the two nations.