Spoken Feature: BBC Witness

Mikhail Gorbachev, the last leader of the Soviet Union, died aged 91 last week. Gorbachev came to power in 1985 at a time when the Soviet economy was on the brink of collapse. He introduced a radical reform programme called Perestroika. 25 years on from Perestroika, in 2012, Louise Hidalgo spoke to three people who remembered those exciting days in Moscow.