Heads of state accompany German Chancellor Angela Merkel (4-L) after they walked through the Brandenburg Gate in Berlin late on November 9, 2009, during celebrations to mark the 20th anniversary of the fall of the Berlin Wall. A Berlin Wall anniversary plea by world leaders for a new fight against 'tyranny' was hailed as Germany cleared away its dominoes of freedom. Getty Images logo Getty Images 2 weeks ago

Heads of state accompany German Chancellor Angela Merkel (4-L) after they walked through the Brandenburg Gate in Berlin late on November 9, 2009, during celebrations to mark the 20th anniversary of the fall of the Berlin Wall. A Berlin Wall anniversary plea by world leaders for a new fight against 'tyranny' was hailed as Germany cleared away its dominoes of freedom.