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ISIS celebrates announcement of their "Caliphate."
Caption: 	This photo was tweeted from a Twitter account widely believed to belong to ISIS in Aleppo, Province, Syria. It purportedly shows celebrating ISIS' announcement of the so called Islamic Caliphate, spanning large areas of Iraq and Syria. The Islamic State in Iraq and Syria (ISIS) is a Sunni Muslim extremist group formerly linked to al-Qaeda-- al Qaeda has since denounced ISIS.
ISIS celebrates announcement of their "Caliphate."
Caption: 	This photo was tweeted from a Twitter account widely believed to belong to ISIS in Aleppo, Province, Syria. It purportedly shows celebrating ISIS' announcement of the so called Islamic Caliphate, spanning large areas of Iraq and Syria. The Islamic State in Iraq and Syria (ISIS) is a Sunni Muslim extremist group formerly linked to al-Qaeda-- al Qaeda has since denounced ISIS.

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Report: U.S. seeks help from rebels

Josh Rogin tells CNN the U.S. is contacting Syrian rebels to help fight against ISIS fighters, according to his sources.