26 November 2015
Last updated at 15:51
Background
Who's in charge of IS?
How Islamic State functions - in 90 seconds
Features and Analysis
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Who runs IS?
How Islamic State makes its 'Caliphate' work
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IS, war and money
Conflicts in Syria and Iraq make for dirty business
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Women within IS
BBC Security correspondent Frank Gardner reports on Islamic State's dual attitude towards women and their value to the movement.
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'The new caliph'
The shadowy power behind Islamic State
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Killing machine
Can IS militants' savagery be explained?
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Inside Mosul
Escapees explain how militants overran their city
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Russia moves
What is Putin's end game in Syria?
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Peace with militants?
Should anyone ever talk to IS?


BBC reporter on frontline against IS
Calling in air strikes against IS
How IS is spreading terror worldwide
The priest who escaped IS captivity
Face-to-face with IS militants
Who's in charge of IS?