On this day in 1989, Tibet’s spiritual leader, the Dalai Lama, won the Nobel Peace Prize.
On this day in 1991, Soviet leader Mikhail Gorbachev pledged to match the United States in scrapping tactical nuclear weapons.
On this day in 1993, China broke its moratorium on nuclear testing.
And on this day in 1996, some 50 countries adopted a declaration calling for the earliest possible agreement on a global ban on anti-personnel land-mines.