IS hostage Kassig 'scared to die'
The parents of a US aid worker held captive by the Islamic State group have revealed he told them in a letter he was afraid to die, but that he had converted to Islam voluntarily and was at peace with his beliefs.
The group has threatened to behead 26-year-old Peter Kassig, from Indiana, who was captured in Syria on October 1 2013 while working with the Sera aid agency.
