Prince Rahim Al-Hussaini, 53, is named in father's will to become Ismaili Muslims' new spiritual leader
                                
                                
                                    (Newser) -
                                    Prince Karim Al-Hussaini, the fourth Aga Khan, is  set to be buried  on Sunday in Egypt, but headlines are now shifting to his son, Prince Rahim Al-Hussaini, who was named in his father's will as the fifth Aga Khan, the spiritual leader of Ismaili Muslims. Rahim, 53, will be...