BERLIN, GERMANY - OCTOBER 30: , , , NO ARCHIVE, ONE TIME USAGE ON OCTOBER 31 ONLY, SPECIAL RATE APPLY, MANDATORY CREDIT PHOTO BY BILD/ FRANK ZAURITZ/GETTY IMAGES REQUIRED) (L-R) Former Soviet leader Mikhail Gorbachev,  former German Chancellor Helmut Kohl and former US President George H.W. Bush pose for a picture in front of segments of the Berlin Wall ahead of celebrations for the 20th anniversary of the fall of the Wall at the offices of German daily paper BILD on October 30, 2009 in Berlin, Germany. Bush, Gorbachev and Kohl, invited by BILD, played key roles as the peaceful revolution unfolded in East Germany in the autumn of 1989. Getty Images logo Getty Images 1 month ago

BERLIN, GERMANY - OCTOBER 30: , , , NO ARCHIVE, ONE TIME USAGE ON OCTOBER 31 ONLY, SPECIAL RATE APPLY, MANDATORY CREDIT PHOTO BY BILD/ FRANK ZAURITZ/GETTY IMAGES REQUIRED) (L-R) Former Soviet leader Mikhail Gorbachev, former German Chancellor Helmut Kohl and former US President George H.W. Bush pose for a picture in front of segments of the Berlin Wall ahead of celebrations for the 20th anniversary of the fall of the Wall at the offices of German daily paper BILD on October 30, 2009 in Berlin, Germany. Bush, Gorbachev and Kohl, invited by BILD, played key roles as the peaceful revolution unfolded in East Germany in the autumn of 1989.