BBC News' Gavin Hewitt was in Berlin in November 1989 making a film for Panorama on the momentous events that saw the Wall open and people pass openly between East and West for the first time in a generation.
Here, he reports on the confusion and anxiety of the East German authorities and the excitement and optimism of the people of Berlin on that night.
Panorama: Deutschland, Deutschland was broadcast on 13 November 1989.
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