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Sen. Saxby Chambliss says the brutal terror group poses a direct threat to America.
Are the latest round of airstrikes against ISIS an expansion of the U.S. mission in Iraq? CNN's Barbara Starr reports.
After forcing millions to flee their homes, U.S. intelligence is now trying to determine just how strong ISIS is.
CNN's Gary Tuchman joins U.S. forces as they deliver humanitarian aid to Yazidis trapped by ISIS on the Sinjar Mountains.
More than one hundred additional military advisers will be sent to Iraq, Pentagon sources confirm to CNN's Barbara Starr, as they consider new options for humanitarian relief for the Yazidis trapped by ISIS.
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.
As the U.S prepares to send more advisers to Iraq, there are new concerns that the U.S. is entering the murky waters of "mission creep." CNN's Jim Sciutto reports on the growing number of U.S. troops on the ground in the war-torn country.
U.S. airstrikes targeted ISIS units and checkpoints around the Mount Sinjar area. CNN's Barbara Starr reports.
ISIS militants might be among the best equipped jihadist groups in the world. CNN's Pamela Brown reports.
CNN's Jim Sciutto takes a look at the United States considering air strikes in Iraq in response to a militant surge.