Countdown to fall of USSR Twenty-five years ago, the Soviet Union split apart and the Cold War as the world then knew it came to an end. The collapse was set in motion six years earlier by the sweeping reforms of Mikhail Gorbachev 1985: New Soviet Communist Party (CPSU) leader Mikhail Gorbachev calls for perestroika (economic restructuring) and glasnost (political openness) 1988: Stirrings of independence in Lithuania, Latvia and Estonia 1989: Boris Yeltsin elected to parliament set up under Gorbachev’s reforms. Soviet bloc crumbles as Berlin Wall falls 1990-91: Gorbachev calls for multi-party politics – but pro-independence demonstrations in Azerbaijan and Lithuania are violently suppressed Jun 1991: Yeltsin elected president of Russian Federation Aug 19: Gorbachev overthrown in coup by Communist hardliners while at his holiday home in Crimea. Plotters aim to prevent signing of new treaty giving republics greater freedom Aug 19: Boris Yeltsin calls for general strike following coup Aug 21: Coup collapses amid massive demonstrations, spearheaded by Yeltsin Aug 22: Gorbachev freed from house arrest – returns to Moscow but is humiliated in Russian parliament by Yeltsin, who orders that Soviet Communist Party end its activities on Russian soil Aug 23: Gorbachev resigns as General Secretary of CPSU Sep 6: Independence of Lithuania, Estonia and Latvia recognized Dec 8: Leaders of Russia, Belarus and Ukraine meet to disband Soviet Union and form Commonwealth of Independent States (CIS) Dec 25: Gorbachev steps down as Soviet president – USSR officially ceases to exist Freedom Monument, Riga, Latvia RUSSIA Moscow 1,000km 620 miles SOVIET REPUBLICS Date independence declared, 1991 Feb / Apr: Lithuania (1), Georgia (2) Aug 20-22: Estonia (3), Latvia (4) Aug 24-31: Ukraine (5), Belarus (6), Moldova (7), Azerbaijan (8), Kyrgyzstan (9) Sep: Uzbekistan (10), Tajikistan (11), Armenia (12) Oct: Turkmenistan (13) Dec: Kazakhstan (14) Baltic States do not join CIS. Ukraine has not ratified charter, Turkmenistan associate member only since 2005, Georgia quits in 2008 after South Ossetia war Pictures: Associated Press, Getty Images