Brussels, 09/11/2009 (Agence Europe) - The 27 European Union heads of state and government, European Commission President José Manuel Barroso, European Parliament President Jerzy Buzek, President of the Russian Federation Dmitri Medvedev, US Secretary of State Hillary Clinton, and other well-known figures, such as Helmut Kohl, Mikhail Gorbachov and Lech Walesa, gathered at the Brandenburg Gate in the German capital of Berlin on Monday evening 9 November to mark the 20th anniversary of the...