In this photo released on June 23, 2015, by a website of Islamic State militants, Islamic State militants patrol Khazer, Iraq, near Mosul. The group's conventional and guerrilla tactics carried it to an overwhelming sweep of northern and western Iraq in 2014, capturing Mosul, Iraq's second-biggest city. Shortly thereafter, IS leader Abu Bakr al-Baghdadi declared a "caliphate" spanning its territory in Iraq and Syria. (Militant website via AP)
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