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Authorities stopped three Colorado teenage girls on their way to join ISIS in Iraq and Syria. Pamela Brown reports.
ISIS claims to have captured weapons and supplies from a U.S. airdrop, which was intended for the Kurds fighting ISIS.
Watch CNN's full interview with Matt Olsen during "The Situation Room," airing from 5-7 p.m. ET.
The former head of U.S. counterterror operations said Tuesday the "imminent threat" posed by an al Qaeda offshoot in Syria hasn't lessened after a U.S. air campaign there.
Speaking to CNN's Jim Sciutto, Matt Olsen said by his analysis the threat from the Khorasan group "is still in the same place as it was before" President Barack Obama ordered airstrikes against the terror operation last month. Full story
Nick Paton Walsh speaks to a 15-year-old fighter whose foot was blown off by an ISIS grenade in Kobani.
Wolf Blitzer talks to Deputy National Security Adviser Ben Rhodes about the fight against ISIS.
With airstrikes only doing so much damage to ISIS, is the U.S. about to change its strategy? Barbara Starr reports.
The FBI is warning cops and journalists that they could be targets of lone wolf terrorist attacks. Pamela Brown reports.
A new video reveals how ISIS fighters are trained. Brian Todd reports on how the group became a formidable force.
ISIS now controls 80% of Anbar province, and is getting close to the Baghdad airport. Barbara Starr reports.