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Iraq's Shiites prepare defense of their holy ...

Iraqi officials won't say for certain whether the man in a newly released ISIS video is Abu Bakr al-Baghdadi, whose group has leveled a Shiite holy site under their control. In an effort to stop them, Shiite militias have formed an army in the city of Samarra, the site of one of their holiest shrines. Charlie D'Agata reports.
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