Islamic State demands for U.S. hostage cannot be met, parents say
"Don't worry Dad, if I do go down, I won't go thinking anything but what I know to be true. That you and mom love me more than the moon and the stars," the letter said.
A former U.S. Army soldier who deployed to Iraq in 2007, Kassig was doing humanitarian work through Special Emergency Response and Assistance, an organization he founded, when he was taken captive while on his way to the eastern Syrian city of Deir al-Zor, his family has said. Kassig's first name was Peter before he converted to Islam while in captivity, the family has said. Videos and full story