Obama condemns beheading of American as 'pure evil'

GAZIANTEP, Turkey - Islamic State militants released a chilling videotape Sunday showing they had beheaded a fifth Western hostage, an American aid worker the group had threatened to kill in retaliation for airstrikes carried out by the United States in Iraq and Syria.

President Barack Obama on Sunday confirmed the death of the aid worker, Peter Kassig, a former Army Ranger who disappeared more than a year ago at a checkpoint in northeastern Syria while delivering medical supplies.

Kassig "was taken from us in an act of pure evil by a terrorist group," Obama said in a statement from aboard Air Force One that was read to the news media in Washington.

In recent days, U.S. intelligence agencies received indications that the Islamic State had killed Kassig. The president's announcement was the first official confirmation of his death.

"Today we offer our prayers and condolences to the parents and family of Abdul-Rahman Kassig, also known to us as Peter," Obama's statement said. The president used the Muslim name that Kassig adopted after his capture, making the point that the Islamic State had killed a fellow Muslim. He acknowledged the "anguish at this painful time" felt by Kassig's family.

The footage in the video released Sunday was of poorer quality than some of the group's previous, slickly produced execution videos.

The video shows a black-robed executioner standing over the severed head of Kassig. Though the end result of the footage was grimly familiar, it was strikingly different from the executions of four other Western hostages, whose televised deaths were carefully choreographed.

Jihadi John appears again

In the clip released early Sunday, the Islamic State displays the head of the 26-year-old aid worker at the feet of the man with a British accent, who appeared in the previous beheading videos and has been nicknamed Jihadi John by the British news media. Unlike the earlier videos, which were staged with multiple cameras from different vantage points, and which show the hostages kneeling, then uttering their last words, the footage of Kassig's death is curtailed - showing only the final scene.

"This is Peter Edward Kassig, a U.S. citizen of your country. Peter, who fought against the Muslims in Iraq while serving as a soldier under the American Army, doesn't have much to say. His previous cellmates have already spoken on his behalf," the fighter with a British accent said. "You claim to have withdrawn from Iraq four years ago. We said to you then that you are liars."

Analysts said that the change in the videos suggested that something may have gone wrong as the militants, who have been under sustained attack from a U.S.-led military coalition and have faced a series of setback in recent weeks, carried out the killing.

"The most obvious difference is in the beheading itself - the previous videos all showed the beheading on camera," Daveed Gartenstein-Ross, a senior fellow at the Foundation for Defense of Democracies and a former director of the Center for the Study of Terrorist Radicalization. "This one just shows the severed head itself. I don't think this was the Islamic State's choice." He added: "The likeliest possibility is that something went wrong when they were beheading him."

Among the things that could have gone wrong, analysts surmise, is that the extremists did not have as much time outdoors as they did when they killed the others. The United States announced soon after the first beheading in August that they would send surveillance aircraft over Syria and residents contacted on social media have reported seeing objects in the sky that they believe are drones. The first four beheadings were carried out in the open air, with a cinematic precision that suggests multiple takes, filmed over an extended period of time. Carrying out a similar level of production as surveillance planes crisscrossed the skies above would result in extended exposure - heightening risk.

Another possibility, Gartenstein-Ross said, is that Kassig resisted, depriving the militants of the ability to stage the killing as they wanted.

Aid worker from Indiana

An Indianapolis native, Kassig turned to humanitarian work after a tour in Iraq in 2007, where he served as an Army Ranger. He was certified as an emergency technician, and by 2012 he returned to the battlefield, this time helping bandage the victims of Syria's civil war who were flooding across the border into Lebanon.

Later that year he moved to Lebanon's capital, Beirut, where he founded a small aid group and initially used his savings to buy supplies, like diapers, which he distributed to the Syrian refugees who were flooding into Lebanon.

In the summer of 2013, he relocated to Gaziantep in southern Turkey, roughly an hour from the border, and began making regular trips into Syria to offer medical care to the wounded.

He went missing on Oct. 1, 2013, when the ambulance he and a colleague were driving was stopped at a checkpoint on the road to Deir al-Zour, Syria. He was transferred late last year to a prison beneath the basement of the Children's Hospital in Aleppo, and then to a network of jails in Raqqa, the capital of the extremist group's self-declared caliphate, where he became one of at least 23 Western hostages held by the group. His cellmates included two American journalists, James Foley and Steven J. Sotloff, as well as two British aid workers, David Haines and Alan Henning, who were beheaded in roughly two-week intervals starting this August.

Kassig was shown in the video released in October that showed the decapitation of Henning. In the months leading up to his death, he seemed to know the end was near.

In a letter to his parents smuggled out this summer, he describes his fear: "I am obviously pretty scared to die but the hardest part is not knowing, wondering, hoping, and wondering if I should even hope at all," he writes. "Just know I'm with you. Every stream, every lake, every field and river. In the woods and in the hills, in all the places you showed me. I love you."