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CAIRO, EGYPT - SEPTEMBER 12 : Egyptian President Abdel Fattah el-Sisi (R) shakes hand with Grand Imam of Al-Azhar Mosque Ahmed el-Tayeb at Al-Azhar Mosque during the Eid AL-Adha in Cairo, Egypt on September 12, 2016. (Photo by Pool / Egyptian Presidency/Anadolu Agency/Getty Images)

CAIRO, EGYPT - SEPTEMBER 12 :  Egyptian President Abdel Fattah el-Sisi (R) shakes hand with Grand Imam of Al-Azhar Mosque Ahmed el-Tayeb at Al-Azhar Mosque during the Eid AL-Adha in Cairo, Egypt on September 12, 2016. (Photo by Pool / Egyptian Presidency/Anadolu Agency/Getty Images)