BERLIN - NOVEMBER 09:  German Chancellor Angela Merkel (C) and her husband Joachim Sauer (L) welcome Italian Prime Minister Silvio Berlusconi (R) on a reception at Bellevue Castle on November 9, 2009 in Berlin, Germany. The city of Berlin is celebrating the 20th anniversary of the fall of the Berlin Wall, which led to the end of communist rule in East Germany and later on the reunification of East and West Germany, with a spectacular event at the Brandenburg Gate and the participation of international leaders. Getty Images logo Getty Images 1 week ago

BERLIN - NOVEMBER 09: German Chancellor Angela Merkel (C) and her husband Joachim Sauer (L) welcome Italian Prime Minister Silvio Berlusconi (R) on a reception at Bellevue Castle on November 9, 2009 in Berlin, Germany. The city of Berlin is celebrating the 20th anniversary of the fall of the Berlin Wall, which led to the end of communist rule in East Germany and later on the reunification of East and West Germany, with a spectacular event at the Brandenburg Gate and the participation of international leaders.