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The United Kingdom, Belgium, and Denmark join the list of more than 50 countries that have agreed to support the fight against ISIS. CNN's Elise Labott reports on the growing coalition.
CNN captures fighting at the Syrian-Turkish border between what is believed to be ISIS and Kurdish fighters. CNN's Phil Black reports.
U.S. is targeting ISIS' oil installations in Syria and Iraq in an attempt to disrupt the groups' flow of oil wealth.
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.