Expansion and declaration of a caliphate - Britannica
https://www.britannica.com:443/topic/Islamic-State-in-Iraq-and-the-Levant/Expansion-and-declaration-of-a-caliphate
WEBThe international and local forces were able to contain ISIL and begin to push it back. ISIL reached its peak by early 2015, controlling over 41,000 square miles in Iraq and Syria and ruling over at least eight million people, but by mid-2015 the group had begun losing ground. Islamic State in Iraq and the Levant - Expansion, Caliphate, Terror ...
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