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U.S. officials have identified a second man who may have been killed fighting along ISIS terrorists - and there has been a recent rise in the number of radicalized Americans heading overseas to fight for jihadist organizations. CNN's Brian Todd reports.
As the Obama administration weighs airstrikes against ISIS terrorists in Syria, officials are concerned at the jihadist group's growing strength, impressive tacticts and "uncanny" discipline. Brian Todd reports on ISIS becoming stronger and more capable.
Brian also took to Twitter to answer your questions on ISIS. Here's a recap.
After an American man was killed fighting with ISIS in Syria, there are new reports that other Americans are joining the lethal terror group. CNN's Brian Todd reports.
British authorities say they are close to identifying the ISIS terrorist who executed American James Foley in that brutal video. CNN's Brian Todd takes you inside the investigation.
One of the e-mails ISIS sent James Foley's family warned they wouldn't stop until "we quench our thirst for your blood." CNN's Brian Todd reports on the horrific messages the terrorist group sent the American journalist's family.
American freelance journalist James Foley is reported to have been beheaded by ISIS, in a gruesome video posted online. CNN's Brian Todd looks back at his life and his work.
After protests were marred by violence and a tough police crackdown Monday, there are new questions about the tactics used by authorities and whether or not they are appropriate. CNN's Brian Todd investigates.
While U.S. airstrikes in Iraq have damaged the ruthless terrorist group known as ISIS, there are fears it may also be elevating the status of their leader, Abu Bakr al-Baghdadi - and turning his attention towards Western targets. CNN's Brian Todd profiles the mysterious figure, aiming to inherit the mantle of Osama bin Laden.
The latest attack on U.S. military personnel by trained Afghan forces raises concerns on the security screening process. CNN's Brian Todd investigates the danger to Americans.