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An image grab taken from a propaganda video released on July 5, 2014 by Al-Furqan Media allegedly shows the leader of the Islamic State (IS) jihadist group Abu Bakr al-Baghdadi, aka Caliph Ibrahim, adressing Muslim worshippers at a mosque in the militant-held northern Iraqi city of Mosul. Baghdadi, the self-proclaimed caliph of the brutal jihadist Islamic State (IS) group that has seized large chunks of Iraq and Syria, made the AFP shortlist of most influential people of 2014. AFP PHOTO / HO / AL-FURQAN MEDIA
An image grab taken from a propaganda video released on July 5, 2014 by Al-Furqan Media allegedly shows the leader of the Islamic State (IS) jihadist group Abu Bakr al-Baghdadi, aka Caliph Ibrahim, adressing Muslim worshippers at a mosque in the militant-held northern Iraqi city of Mosul. Baghdadi, the self-proclaimed caliph of the brutal jihadist Islamic State (IS) group that has seized large chunks of Iraq and Syria, made the AFP shortlist of most influential people of 2014. AFP PHOTO / HO / AL-FURQAN MEDIA

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    ISIS leader believed to be hiding in N. Iraq

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ISIS leader believed to be hiding in N. Iraq

As anti-ISIS forces close in on ISIS fighters near Mosul, the exact whereabouts of ISIS leader Abu Bakr al-Baghdadi remain a mystery. CNN's Phil Black reports from Iraq.

ISIS leader believed to be hiding in N. Iraq

As anti-ISIS forces close in on ISIS fighters near Mosul, the exact whereabouts of ISIS leader Abu Bakr al-Baghdadi remain a mystery. CNN's Phil Black reports from Iraq.