Saudi security forces stand guard next to the holy Kaaba during the funeral of Crown Prince Nayef bin Abdul Azziz on June 17, 2012 in the holy city of Mecca in western Saudi Arabia. The Arab desert kingdom buried the 79-year-old royal, who died of cardiac failure in Geneva the previous day, in a sombre ceremony in Islam's holiest city, as defence minister Prince Salman appeared poised to become the new heir apparent. AFP PHOTO/FAYEZ NURELDINE (Photo credit should read FAYEZ NURELDINE/AFP/GettyImages)