HOPE M. HARRISON (PROFESSOR OF HISTORY AND INTERNATIONAL AFFAIRS, GEORGE WASHINGTON UNIVERSITY): The wall was the iconic symbol of the Cold War. There it was, in concrete. You could touch it. There’s something about it. It represented division. I have long been fascinated by the fact that a major world city, a metropolis, was divided by a wall dividing families, dividing friends, lovers. What led to that decision? ARCHIVAL (HISTORIC FILMS, 1945): ANNOUNCER: 1945, and this was Berlin.