U.S. President Barack Obama (2ndR) and German Chancellor Angela Merkel listen to Holocaust survivors Elie Wiesel (R) and Bertrand Herz (L) during a visit to the former Buchenwald Nazi concentration camp near the eastern German city of Weimar, June 5, 2009. Obama is on a two-day visit to Germany. REUTERS/Kai Pfaffenbach (GERMANY POLITICS)