U.S. President Barack Obama attends an interfaith memorial service for the victims of the bombing at the Boston Marathon in Boston

 
U.S. President Barack Obama attends an interfaith memorial service for the victims of the bombing at the Boston Marathon in Boston
U.S. President Barack Obama attends an interfaith memorial service for the victims of the bombing at the Boston Marathon in Boston, Massachusetts April 18, 2013. REUTERS/Brian Snyder