Support WBURISIS Destroys Historic Mosque In Mosul As Iraqi Forces Close InJames DoubekJune 22, 2017 ShareThe 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)