US President Barack Obama listens to a speech of the German Chancellor as he sits on a podium in front of Berlin's landmark the Brandenburg Gate near the US embassy where Obama also was expected to give a speech on June 19, 2013. Barack Obama walks in John F. Kennedy's footsteps on his first visit to Berlin as US president, but encounters a more powerful and sceptical Germany in talks on trade and secret surveillance practices. AFP PHOTO / CHRISTOF STACHECHRISTOF STACHE/AFP/Getty Images