Russian President Dmitry Medvedev is seen on a giant TV screen while making a speech near the Brandenburg Gate in Berlin on November 9, 2009 during events commemorating the 20th anniversary of the fall of the Berlin Wall. Former Soviet leader Mikhail Gorbachev said on Monday that he expected the Berlin Wall to fall, but that he and German ex-chancellor Helmut Kohl were caught off guard by how quickly it happened.