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Deputy Asst. Secretary of State for Iran & Iraq Brett McGurk says he spoke to Iraqi PM to clarify his comments regarding a threat against the U.S.
The U.S. struck an al Qaeda offshoot called Khorasan in Syria, but some fear the group will still attack U.S. interests.
Saudi Arabia, an key U.S. ally against ISIS, frequently beheads people for non-lethal crimes. CNN's Brian Todd reports.
Drew Griffin exclusively visits a meeting in Syria where moderate groups are coming together in the fight against ISIS.
Amid new U.S. airstrikes in Iraq and Syria, will terrorists retaliate by taking more hostages? CNN's Brian Todd reports.
U.S. authorities are concerned about homegrown extremists and lone wolf attacks in the homeland. Pamela Brown reports.
Egyptian Foreign Minister Sameh Shoukry talks to CNN's Wolf Blitzer about Egypt's involvement against ISIS.
Pentagon Press Secretary Rear Admiral John Kirby tells Wolf Blitzer how successful the latest strikes against ISIS have been.
Brian Todd gets inside accounts of life in Raqqa, Syria, the ISIS stronghold bombed by the U.S. and its allies.
U.S. airstrikes in Syria also aim at the Khorasan, a group of senior al-Qaeda operatives believed to be preparing attacks.