Parents of ISIS Hostage Issue Video Plea for Son's Life

Another captive of the terrorist group.

The parents of Peter Kassig, an American humanitarian aid worker being held by Islamic State militants, released a video Saturday pleading for the former Army Ranger's release.

Kassig, who his parents say has changed his first name to Abdul-Rahman, is shown kneeling next to a militant in a video released Friday that first shows the beheading of a British aid worker. "Obama, you have started your aerial bombard of Shams (Syria), which keep on striking our people, so it is only right that we strike the next of your people," the masked militant says with Kassig at his side.

His parents, Ed and Paula Kassig of Indianapolis, ask in their video that his captors "show mercy and use their power to let our son go."