AdvertisementISIS Destroys Historic Mosque In Mosul As Iraqi Forces Close InJune 22, 2017James DoubekfacebookEmailThe Great Mosque of al-Nuri in Mosul, with its tall, leaning al-Hadba minaret, was where ISIS leader Abu Bakr al-Baghdadi declared the group's "caliphate" in Iraq and Syria in July 2014. (AFP/Getty Images)