German Chancellor Angela Merkel (L) unveils a commemorative postal stamp showing former German Chancellor &lt;a gi-track='captionPersonalityLinkClicked' href=/galleries/search?phrase=Helmut+Kohl&amp;family=editorial&amp;specificpeople=202518 ng-click='$event.stopPropagation()'&gt;Helmut Kohl&lt;/a&gt; as Kohl (R) looks on at a gala evening in Kohl's honour at the Deutsches Museum on September 27, 2012 in Berlin, Germany. Guests from politics, church and society attended the event to honour Kohl on the 30th anniversary of Kohl becoming chancellor. During his chancellorship Kohl facillitated the end of the Cold War, the fall of the Berlin Wall and German reunification.