Jama'at included a growing number of foreign fighters and a considerable Iraqi membership , including remnants of Ansar al - Islam .
Following the US invasion of Iraq and the ensuing insurgency , Jama'at became a decentralized militant network fighting against the coalition forces and their Iraqi allies .
Jama'at included a growing number of foreign fighters and a considerable Iraq membership , including remnants of Ansar al - Islam .
Following the US invasion of Iraq and the ensuing insurgency , Jama'at became a decentralized militant network fighting against the coalition forces and their Iraqi allies .