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Goal is to hold accountable Islamic State fighters and others for 'acts of inhumanity on an unimaginable scale'
Kurdish forces and Shia armed volunteers kill at least two senior Islamic State fighters as they make military gains
Thousands of residents threatened mass suicide if extremists entered the town, which had been under siege for two months
Though its threat to the US and Europe is exaggerated, the IS' regional ambitions are tipping scales against Iran
The Islamic State Group's bureaucracy poses a daunting challenge to its foes
RtoP advocates describe state capacity as the norm’s next frontier, but this focus risks further civilian violence
Christopher Dickey, foreign editor for The Daily Beast, weighs in
Douglas McAuthur McCain went to Syria this year to join the radical group
The Iraqi army is only able to reach Amerli by air with the territory being in Islamic State hands
Shia militia opens fire on Sunni mosque in eastern Iraq, killing at least 73 people as Islamic State violence continues