French ISIS Terrorist Likely Involved in Kassig Beheading

France says jihadist citizen likely took part in beheading of US aid worker who converted to Islam, possibly another Frenchman too.Ari Yashar, 11/17/2014, 2:26 PM

Kassig's Parents: Peter Died for His Love of the Syrian People

Parents of aid worker beheaded by ISIS say they are proud of their son's humanitarian work.Ben Ariel, 11/17/2014, 4:13 AM

Peter Kassig May Have Fought His ISIS Captors to the End

Experts note stark differences to previous execution videos; speculate American aid worker, who was a former US Ranger, put up a fight.Ari Soffer, 11/16/2014, 10:47 PM

ISIS Beheads Hostage Peter Kassig

Fifth Western hostage beheaded by Islamic State terrorists, video purportedly shows - even after he converted to Islam.Tova Dvorin, 11/16/2014, 1:51 PM

Parents of American Hostage Plead for His Release

Parents of Peter Kassig, an American aid worker held hostage by ISIS, appeal for his release in a statement and video message.Ben Ariel, 10/5/2014, 3:32 AM