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Iraqi government forces patrol the centre of the city of Fallujah on June 18, 2016 as they hunt down holdout jihadists after retaking the Islamic State (IS) group's last remaining major hub in Iraq.
While not fully under government control yet, Fallujah is the latest in a string of battlefield losses for IS, which has seen its two-year-old "caliphate" shrink significantly in recent months.

 / AFP / STRINGER        (Photo credit should read STRINGER/AFP/Getty Images)
Iraqi government forces patrol the centre of the city of Fallujah on June 18, 2016 as they hunt down holdout jihadists after retaking the Islamic State (IS) group's last remaining major hub in Iraq.
While not fully under government control yet, Fallujah is the latest in a string of battlefield losses for IS, which has seen its two-year-old "caliphate" shrink significantly in recent months.

 / AFP / STRINGER        (Photo credit should read STRINGER/AFP/Getty Images)

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Iraqi troops retake Falluja as refugee crisis worsens

Iraq's Prime Minister says his counterterrorism forces have retaken the key city of Falluja, which had been in ISIS hands for two years, but the humanitarian crisis is worsening. CNN's Ben Wedeman has more.