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[File photo] This undated file image posted on a militant website on Jan. 14, 2014, which has been verified and is consistent with other AP reporting, shows fighters from the al-Qaida linked Islamic State of Iraq and the Levant (ISIL) marching in Raqqa, Syria.
[File photo] This undated file image posted on a militant website on Jan. 14, 2014, which has been verified and is consistent with other AP reporting, shows fighters from the al-Qaida linked Islamic State of Iraq and the Levant (ISIL) marching in Raqqa, Syria.

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Anti-ISIS coalition continues to develop

CNN's Jim Sciutto reports on which countries are joining the effort to battle ISIS and which ones are still hesitant.

Anti-ISIS coalition continues to develop

CNN's Jim Sciutto reports on which countries are joining the effort to battle ISIS and which ones are still hesitant.