Iran not backing down: Saudi Arabia should apologize for haj deaths
"The Islamic World has a lot of questions," Khamenei says; Rouhani demands investigation into deadly crush.
Muslim pilgrims pray at the Grand Mosque on September 14, 2015 in Saudi Arabia's holy Muslim city of Mecca. The hajj, a pillar of the Muslim religion, drew last year about two million faithful and is expected to start on September 21(photo credit: AFP PHOTO)ByREUTERS