U.S. President Barack Obama walks out of the Hall of Remembrance at the Yad Vashem Holocaust Memorial in Jerusalem, Israel, Friday, March 22, 2013. (AP Photo/Pablo Martinez Monsivais)

Photo by: Pablo Martinez Monsivais

U.S. President Barack Obama walks out of the Hall of Remembrance at the Yad Vashem Holocaust Memorial in Jerusalem, Israel, Friday, March 22, 2013. (AP Photo/Pablo Martinez Monsivais)