Ex-President of the USSR, Mikhail Gorbachev, attends a press conference as he launches a WMD (Weapons of Mass Destruction) awareness programme September 23, 2004 in London. Gorbachev, on a three-day visit to the UK, is to give a lecture on "Global security in the 21st Century". (Photo by Ian Waldie/Getty Images) LONDON, ENGLAND – SEPTEMBER 23 2004

Various ministers gathered at Chequers, the British prime minister's country residence, for Russian President Mikhail Gorbachev's visit. Left to right – Denis Thatcher (1915 – 2003), Raisa Gorbachev, Mikhail Gorbachev and Margaret Thatcher. Also in the group are Geoffrey Howe and Michael Heseltine. (Photo by Fox Photos/Getty Images). 16th December 1984

Ex-President of the USSR, Mikhail Gorbachev, attends a press conference as he launches a WMD (Weapons of Mass Destruction) awareness programme September 23, 2004 in London. Gorbachev, on a three-day visit to the UK, is to give a lecture on "Global security in the 21st Century". (Photo by Ian Waldie/Getty Images) LONDON, ENGLAND – SEPTEMBER 23 2004

Anastasia Virganskaya, granddaughter of Mikhail Gorbachev leaves the Westbury Hotel on her way to the Raisa Gorbachev Foundation Party on June 5, 2010 in London, England. (Photo by Samir Hussein/Getty Images). LONDON – JUNE 5 2010

Anastasia Virganskaya, granddaughter of Mikhail Gorbachev leaves the Westbury Hotel on her way to the Raisa Gorbachev Foundation Party on June 5, 2010 in London, England. (Photo by Samir Hussein/Getty Images). LONDON – JUNE 5 2010

(L to R) Former Soviet President Mikhail Gorbatchev, former U.S. President George Bush and former German Chancellor Helmut Kohl talk during the “Point Alpha Prize” ceremony on June 17, 2005 in Geisa near Fulda, Germany. The three statesmen received the new German 'Point Alpha Prize' for their efforts leading to Germany's reunion in 1989. The ceremony took part at a former U.S. Army observation post called 'Point Alpha', near the iron curtain between East Germany and West Germany, which is now a memorial. (Photo by Ralph Orlowski/Getty Images). FULDA, GERMANY – JUNE 17

Former Russian president Mikhail Gorbachev's grand-daughters Ksenia (L) and Anastasia Virganskaya pose for a photograph as they arrive for the Raisa Gorbachev Foundation Launchy Party On June 10, 2006 in Althrop, England. The night is themed 'A Midsummer Russian Fantasy' at Diana, Princess Of Wales's family home to launch the Raisa Gorbachev Foundation – an international fund fighting child cancer. (Photo by Chris Jackson/Getty Images). NORTHAMPTON, UNITED KINGDOM – JUNE 10 2006

Former Russian president Mikhail Gorbachev's grand-daughter Ksenia Virganskaya talks on a walkie talkie at the Raisa Gorbachev Foundation Launch Party On June 10, 2006 in Althrop, England. The night is themed 'A Midsummer Russian Fantasy' at Diana, Princess Of Wales's family home to launch the Raisa Gorbachev Foundation – an international fund fighting child cancer. (Photo by Chris Jackson/Getty Images). NORTHAMPTON, UNITED KINGDOM – JUNE 10 2006

Dalai Lama jokes with Mikail Gorbachev during the Summit of the Nobel Peace Prize Laureates closing ceremony at the Protomoteca Hall, December 15,2007 in Rome, Italy.(Photo by Franco Origlia/Getty Images). ROME – DECEMBER 15 2007

German Chancellor Angela Merkel and former Soviet leader Mikhail Gorbachev attend the opening of an exhibition on Gorbachev's life at museum “The Kennedys” on February 24, 2011 in Berlin, Germany. The exhibition “Aus dem Familienalbum” will run to March 27. (Photo by Henning Schacht-Pool/Getty Images). BERLIN, GERMANY – FEBRUARY 24 2011

Supermodel Claudia Schiffer and former Soviet Union Prime Minister and Women's World Awards President Mikhail Gorbachev attend the 3rd Annual Women's World Awards after party held at the Hammerstein Ballroom on October 14, 2006. (Photo by Peter Kramer/Getty Images). NEW YORK – OCTOBER 14 2006

In this picture provided by BPA German Chancellor Angela Merkel and former Soviet leader Mikhail Gorbachev attend the opening of an exhibition on Gorbachev's life at museum “The Kennedys” on February 24, 2011 in Berlin, Germany. The exhibition “Aus dem Familienalbum” will run to March 27. (Photo by Jesco Denzel/BPA-Pool/Getty Images). BERLIN, GERMANY – FEBRUARY 24 2011

Ksenia Gorbacheva and Anastasia Virganskaya arrive at the Mikhail Gorbachev 80th Birthday Cocktail Party at Christies on February 3, 2011 in London, England. (Photo by Chris Jackson/Getty Images). LONDON, ENGLAND – FEBRUARY 03 2011

Anastasia Virganskaya arrives at the Mikhail Gorbachev 80th Birthday Cocktail Party at Christies on February 3, 2011 in London, England. (Photo by Chris Jackson/Getty Images). LONDON, ENGLAND – FEBRUARY 03 2011

A visitor looks at the photo exhibition on Gorbachev's life at museum “The Kennedys” on February 25, 2011 in Berlin, Germany. The exhibition “Aus dem Familienalbum” of former Soviet leader Mikhail Gorbachev will run until March 27. (Photo by Andreas Rentz/Getty Images). BERLIN, GERMANY – FEBRUARY 25 2011