From left, French President Nicolas Sarkozy, German Chancellor Angela Merkel, Russian President Dmitry Medvedev, German President Horst Koehler, Berlin's Mayor Klaus Wowereit and U.S. Secretary of State Hillary Clinton wave to the crowd in front of the Brandenburg Gate in Berlin, Germany, Monday, Nov. 9, 2009, during the commemorations of the 20th anniversary of the fall of the Berlin Wall on Nov.9, 1989.