![[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.](https://media.cnn.com/api/v1/images/stellar/prod/140910130410-isis-march-syria.jpg?q=x_0,y_0,h_1125,w_2000,c_fill/w_850)
CIA: ISIS has more than 20,000 fighters
The CIA now says there are between 20,000 to 31,500 ISIS fighters operating in Iraq and Syria. CNN's Jim Sciutto reports.
02:15
- Source:
CNN
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