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The group was founded in 1999 by Abu Musab al-Zarqawi under the name Jamāʻat al-Tawḥīd wa-al-Jihād, "The Organization of Monotheism and Jihad" (JTJ)
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AQI leader Abu Ayyub al-Masri announces the creation of Islamic state and says that they will politicize AQI's activities.
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The Islamic State made its first significant territorial gain in Iraq when militants captured the city of Fallujah in January 2014, signaling its increasing capability.
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ISIL released a third video showing journalist John Cantlie, showing Cantlie in an orange prison uniform. The scripted video criticizes US president Barack Obama's strategy of using airstrikes to defeat ISIL.
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ISIL released a video showing a beheaded American hostage, Peter Kassig, and the beheading of 15 Syrian Army prisoners.
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Kayla Mueller was killed in the Jordanian airstrike on Ar-Raqqah and it was video taped. Experts believe it was stratigically timed to drive a wedge between the US and Jordan by blaming her death on Jordanian airstrikes even though Isis was the killer,
