FILE - In this Wednesday, Nov. 2, 2011 file photo, Muslim pilgrims visit the Hiraa cave, at the top of Noor Mountain on the outskirts of Mecca, Saudi Arabia. As Muslims from all over the world congregate for the annual hajj pilgrimage, some are defying the edicts of Saudi Arabia’s strict Wahhabi school of Islam by climbing al-Nour mountain in the hope of attaining spiritual favor. Hatreds between Shiites and Sunnis are now more virulent than ever in the Arab world because of Syria's brutal civil war. Hard-line clerics and politicians on both sides have added fuel, depicting the fight as essentially a war of survival for their sect. (AP Photo/Hassan Ammar, File)

Associated Press
FILE - In this Wednesday, Nov. 2, 2011 file photo, Muslim pilgrims visit the Hiraa cave, at the top of Noor Mountain on the outskirts of Mecca, Saudi Arabia. As Muslims from all over the world congregate for the annual hajj pilgrimage, some are defying the edicts of Saudi Arabia’s strict Wahhabi school of Islam by climbing al-Nour mountain in the hope of attaining spiritual favor. Hatreds between Shiites and Sunnis are now more virulent than ever in the Arab world because of Syria's brutal civil war. Hard-line clerics and politicians on both sides have added fuel, depicting the fight as essentially a war of survival for their sect. (AP Photo/Hassan Ammar, File)
FILE - In this Wednesday, Nov. 2, 2011 file photo, Muslim pilgrims visit the Hiraa cave, at the top of Noor Mountain on the outskirts of Mecca, Saudi Arabia. As Muslims from all over the world congregate for the annual hajj pilgrimage, some are defying the edicts of Saudi Arabia’s strict Wahhabi school of Islam by climbing al-Nour mountain in the hope of attaining spiritual favor. Hatreds between Shiites and Sunnis are now more virulent than ever in the Arab world because of Syria's brutal civil war. Hard-line clerics and politicians on both sides have added fuel, depicting the fight as essentially a war of survival for their sect. (AP Photo/Hassan Ammar, File)
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