German Chancellor Merkel, Berlin Mayor Wowereit and Director of the Berlin Wall Foundation Klausmeier shake hands with children during a ceremony marking the 25th anniversary of the fall of the Berlin Wall at a memorial in Bernauer Strasse in Berlin

German Chancellor Merkel, Berlin Mayor Wowereit and Director of the Berlin Wall Foundation Klausmeier shake hands with children during a ceremony marking the 25th anniversary of the fall of the Berlin Wall at a memorial in Bernauer Strasse in Berlin

German Chancellor Angela Merkel, Federal Government Commissioner for Culture Monika Gruetters (3R), Berlin Mayor Klaus Wowereit and Director of the Berlin Wall Foundation Axel Klausmeier (R) shake hands with children symbolising the so-called ‘Mauerspechte’ (‘wall peckers’, people who chipped the wall with hammers) during a ceremony marking the 25th anniversary of the fall of the Berlin Wall at a memorial in Bernauer Strasse in Berlin, November 9, 2014. REUTERS/Fabrizio Bensch (GERMANY – Tags: POLITICS ANNIVERSARY SOCIETY)