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Open Image ModalAn Iraqi Shiite fighter, loyal to Muslim Shiite cleric Moqtada al-Sadr, takes part in military and first aid training on Aug. 19, 2014 in Najaf, central Iraq. (HAIDAR HAMDANI/AFP/Getty Images) (credit:HAIDAR HAMDANI via Getty Images)
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Open Image ModalIraqi forces patrol the town of Jurf al-Sakhar in Babil province after the Iraqi army announced a military operation against Islamic State (IS) militants on Aug. 17, 2014. (Stringer/Anadolu Agency/Getty Images) (credit:Anadolu Agency via Getty Images)
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Open Image ModalMembers of the Hezbollah Brigade in Iraq, a Shiite movement supporting Iraqi government forces in the ongoing clashes against Islamic Sate (IS) jihadists in northern Iraq, carry the coffin of a comrade during his funeral procession on Aug. 20, 2014 in Najaf after he was killed in combat south of Baghdad. (HAIDAR HAMDANI/AFP/Getty Images) (credit:HAIDAR HAMDANI via Getty Images)
Mideast Iraq(04 of16)
Open Image ModalSmoke rises during airstrikes targeting Islamic State (IS) militants at the Mosul Dam in Iraq on Aug. 18, 2014. (AP Photo/Khalid Mohammed) (credit:ASSOCIATED PRESS)
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Open Image ModalA car bomb exploded outside the house of Iraqi Intelligence Service member Abdulemir Asgar Kamal, damaging buildings in Kirkuk, Iraq on Aug. 20, 2014. (Ali Mukarrem Garip/Anadolu Agency/Getty Images) (credit:Anadolu Agency via Getty Images)
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Open Image ModalA Peshmerga fighter flashes the sign for victory on top of an armored vehicle at the frontline of fighting with Islamic State (IS) militants east of Mosul on Aug. 18, 2014. (AHMAD AL-RUBAYE/AFP/Getty Images) (credit:AHMAD AL-RUBAYE via Getty Images)
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Open Image ModalPeshmerga soldiers pose for a group portrait at a military base south of Erbil, the capital of the Kurdistan Regional Government in Iraq. (Vianney Le Caer/Pacific Press/LightRocket/Getty Images) (credit:Pacific Press via Getty Images)
(08 of16)
Open Image ModalA Shiite fighter, loyal to Iraqi Shiite cleric Moqtada al-Sadr, holds a position against Islamic State (IS) militants after re-taking control of an area in the Jurf al-Sakher district south of Baghdad, Iraq on Aug. 18, 2014. (ALI AL-SAADI/AFP/Getty Images) (credit:ALI AL-SAADI via Getty Images)
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Open Image ModalMembers of Iraqi anti-terrorism forces wave the national flag in celebration after securing a checkpoint from Sunni militants in the village of Badriyah, west of Mosul, Iraq on Aug. 19, 2014. (AHMAD AL-RUBAYE/AFP/Getty Images) (credit:AHMAD AL-RUBAYE via Getty Images)
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Open Image ModalAn Iraqi Kurdish Peshmerga fighter monitors the area from a frontline position in Bashiqa, northeast of Mosul, Iraq on Aug. 16, 2014. (AHMAD AL-RUBAYE/AFP/Getty Images) (credit:AHMAD AL-RUBAYE via Getty Images)
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Open Image ModalMembers of the minority Yezidi religious sect, who fled their homes after assaults from Islamic State (IS) militants, take shelter in buildings under construction in the Zakho district nearby the Iraq-Turkey border on Aug. 16, 2014. (Ahmet Izgi/Anadolu Agency/Getty Images) (credit:Anadolu Agency via Getty Images)
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Open Image ModalAn internally displaced Iraqi woman holds her sister during a sandstorm outside the Bajid Kandala camp in Feeshkhabour, Iraq on Aug. 19, 2014. (AP Photo/Khalid Mohammed) (credit:ASSOCIATED PRESS)
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Open Image ModalDisplaced Iraqis catch clothes provided by a charity outside the Bajid Kandala camp in Feeshkhabour, Iraq on Aug. 19, 2014. (AP Photo/Khalid Mohammed) (credit:ASSOCIATED PRESS)
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Open Image ModalIraqi Kurdish Peshmerga fighters monitor the area from a frontline position in Bashiqa, northeast of Mosul, Iraq on Aug. 16, 2014. (AHMAD AL-RUBAYE/AFP/Getty Images) (credit:AHMAD AL-RUBAYE via Getty Images)
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Open Image ModalOn Aug. 16, 2014, Kurdish Peshmerga forces patrol a bridge, which led from Guver village to Mosul, after it was destroyed by Islamic State (IS) militants. (Ahmet Izgi/Anadolu Agency/Getty Images) (credit:Anadolu Agency via Getty Images)
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Open Image ModalOn Aug. 14, 2014, an Iraqi Kurdish Peshmerga fighter takes position on the frontline near the Kurdish checkpoint of Aski kalak, west of Erbil, the capital of the autonomous Kurdish region in northern Iraq. (SAFIN HAMED/AFP/Getty Images) (credit:SAFIN HAMED via Getty Images)