Wolf Blitzer delivers the most important breaking news and political, international, and national security stories of the day. Tune to The Situation Room weekdays 5-7pm ET on CNN.
As ISIS sweeps across Iraq and Syria and strikes fear in the heart of Westerners, many are baffled about who this group is, where they came from, and what connection they have to other Islamist jihadi groups. CNN Chief National Security Correspondent Jim Sciutto explains the similarities and differences between ISIS and al Qaeda.
As ISIS tightens its brutal grip on vast stretches of Iraq and Syria, women are playing an active role in its reign of terror. CNN's Brian Todd has been looking into that.