Events in the soviet union By 19emaynard Dec 24, 1978 Gorbachev introduces perestroika Dec 1, 1985 Gorbachev introduces glasnost Dec 24, 1987 —Intermediate-Range Nuclear Forces (INF) Treaty signed Dec 24, 1989 berlin wall falls Dec 24, 1989 Jozsef Antall elected prime minister of Hungary Dec 24, 1989 Vaclav Havel elected president of Czechoslovakia Dec 24, 1990 Lech Walesa elected president of Poland Dec 24, 1990 Germany reunification takes place Dec 24, 1990 1st general elections in Romania
