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A fighter from a Shiite militia takes a combat position outside Falluja on Monday, May 23.
A fighter from a Shiite militia takes a combat position outside Falluja on Monday, May 23.

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    Iraqi military advancing on key ISIS-held city

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Iraqi military advancing on key ISIS-held city

The Iraqi army -- and some shady brothers in arms with ties to Iran -- are waging an all out assault on Falluja. CNN's Barbara Starr reports.

Iraqi military advancing on key ISIS-held city

The Iraqi army -- and some shady brothers in arms with ties to Iran -- are waging an all out assault on Falluja. CNN's Barbara Starr reports.