(CNN) -- In a video published to the Internet on Sunday -- purportedly from terror group ISIS -- militants claim to have beheaded American hostage Peter Kassig.
（CNN)--星期天，一段据称由恐怖组织伊斯兰国公布到网络上的视频声称美国人质皮特·卡西格已经被斩首。
The video shows the aftermath of a beheading, in which the victim is not clearly recognizable. CNN has not been able to confirm the authenticity of the video nor the identity of the victim.
这段视频记录了斩首之后的现场，但无法清晰辨认出受害人。CNN目前无法确认这段视频的真实性，也不能确定受害人的身份。
Kassig, 26, who converted to Islam in captivity, also went by the name Abdul Rahman Kassig.
卡西格今年26岁，在被俘期间转信伊斯兰教，同时还一个名字叫：阿卜杜勒·拉赫曼·卡西格
He went to the Middle East as a U.S. soldier and returned as a medical worker, feeling compelled to help victims of war.
他以美国士兵的身份奔赴中东，后以一个医疗工作者的身份回国，并以帮助战争受害者为己任。
After returning to civilian life, he did aid work in Syria, where he was captured. He was held hostage for over a year.
回归平民生活后，他在叙利亚做援助工作，最终在那里被抓。他已经被俘一年多。
The White House issued a statement condemning the purported killing.
白宫已经发表声明，谴责这次还未证实的屠杀。
"The intelligence community is working as quickly as possible to determine (the video's) authenticity. If confirmed, we are appalled by the brutal murder of an innocent American aid worker and we express our deepest condolences to his family and friends," said National Security Council spokeswoman Bernadette Meehan.
“情报机构正在以尽可能最快的速度确认视频的真实性。这种残忍杀害无辜美国救援人员的行为令人发指，如果确认是真实的，我们将对他的家人和朋友表示最深沉的哀悼，”美国国家安全局发言人伯纳黛特·米汉说。
British Prime Minister also condemned ISIS over purported killing.
英国首相针对这次疑似事件也对伊斯兰国发出了谴责。
"I'm horrified by the cold blooded murder of Abdul-Rahman Kassig. ISIL have again shown their depravity. My thoughts are with his family," British Prime Minister David Cameron said on Twitter.
“斩杀阿卜杜勒·拉赫曼·卡西格的冷血行为让我感到震惊。ISIL又一次展现出了他们的邪恶。我的心和卡西格的家人同在，”英国首相大卫·卡梅伦在推特上说。
ISIL is another term for the group ISIS, the Islamic State in Iraq and Syria.
ISIL是ISIS的另外一种称呼，即伊拉克和叙利亚伊斯兰国
Five beheadings of Westerners
五位西方公民被斩首
Kassig is the fifth Westerner ISIS claims to have beheaded.、
据伊斯兰国的声明，卡西格是第五名被斩首的西方公民。
The first was U.S. journalist James Foley. A video of his killing was posted online in mid-August, just over a week after President Obama approved "targeted airstrikes" against ISIS.
第一位是美国记者詹姆斯·福利。八月中旬，在奥巴马发动针对伊斯兰国的空袭一个星期后，他被斩首的视频就被公布到网络上。
In early September, ISIS released a video showing the beheading of U.S. journalist Steven Sotloff. Sotloff's apparent killer spoke in what sounded like the same British accent as the man who purportedly killed Foley.
九月初，伊斯兰国公布了美国记者斯蒂芬·所托罗夫被斩首的视频。杀死这两人的刽子手口音听起来相似，都是相同的英国口音。
Less than two weeks later, ISIS announced in a video the apparent murder of British aid worker David Haines.
此后不到两个星期，伊斯兰国在一段可信的视频中宣称杀死了英国援助工作者大卫·海恩斯
And on October 3, ISIS released a video showing the apparent beheading of hostage Alan Henning.
在10月2日，通过伊斯兰国公布的视频，确信被俘的阿伦·亨宁也被斩首。
Plea for mercy
恳求
Kassig's life was threatened in that last video.
在最后一段视频中，卡西格的生命便受到了威胁
A week after its release, Kassig's family released a YouTube video of its own, asking his captors to show mercy and free him.
在视频公布一个星期后，卡西格的家人在YouTube上也发布了一段视频，恳求囚禁卡西格的人发发慈悲，放了卡西格。
Kassig's mother, Paula, addressed her son in the video. "We are so very proud of you and the work you have done to bring humanitarian aid to the Syrian people," she said.
卡西格的母亲保拉在视频中对她儿子说：“我们以你为骄傲，你对叙利亚人民所做的人道主义援助让我们自豪。”
The couple noted they were releasing the video on the same day of Islam's Eid al-Adah, or the Festival of Sacrifice, when Muslims slaughter lambs, goats, sheep and cattle and distribute the meat to the poor and their families.
这对夫妇强调他（她）们特意选在伊斯兰教古邦节这一天发布这个视频。古邦节是一个牺牲献祭的节日，穆斯林会宰杀牛羊，并将肉分给穷人和他们的家人。
A native of Indiana, Peter Kassig founded Special Emergency Response and Assistance, a nongovernmental organization aiding Syrians fleeing the civil war there.
皮特·卡西格出生并成长在印第安纳州，他建立了一个紧急情况应急应助组织。作为一个非政府组织，它主要是为了帮助那些逃离叙利亚内战的难民。
From 2012, he delivered food and medical supplies within and outside Syria and provided trauma care and training, his family said.
他的家人说，从2012年起，他就往叙利亚境内和境外运送食物和医疗物品，同时提供外科医疗服务，并对其他人进行培训。
Joined the Army in 2006
2006年参军
Kassig's journey began when he joined the U.S. Army Rangers in 2006 and deployed to Iraq in 2007. He was honorably discharged for medical reasons after a brief tour and returned to the United States to study political science and train for 1,500-meter races. But something wasn't right.
卡西格于2006年加入美国陆军突击部队，2007年被安排去伊拉克。由于身体原因，在一次简短的游行后他光荣退伍了。回到美国后他进修政治学，还进行1500米的田径训练。但是，他总觉得格格不入。
"I was going to school with kids who look the same, were the same age as me, but we weren't the same," he said in an interview with CNN in 2012. "I wanted more of a challenge, a sense of purpose."
“我在学校看起来和其他人一样，我们也是同龄人，但是我们不一样，”2012年在一次CNN的采访中他这样回答。“我需要的不仅仅是一个挑战，一个目标。”
In 2010, Kassig took time off and began his certification as an emergency medical technician.
2010年，卡西格休息了一段时间，并开始争取获得急诊医师的认证。
In the two years that followed, he fell in love, got married and quickly divorced. Devastated and heartbroken, he went back to school, but he couldn't shake his depression.
两年后，他恋爱结婚，然后立刻又离婚。精疲力竭，心碎神伤后，他又回到学校，但仍然无法回去低落的情绪。
"I needed a game changer," he said.
“我需要改变我的生活，”他说
To Syria then captivity
去叙利亚，被俘
He decided he would head to Beirut, follow the situation in Syria and try to help. So on his spring break in 2012, he packed his medical kit and flew into the Lebanese capital.
他看到叙利亚的局势，他决定去贝鲁特，做一个援助人员。在2012年春假期间，他背上他的医药箱，飞去了黎巴嫩首都。
After finishing the semester back in the United States, he returned to Lebanon, only this time with a plan -- he founded founded SERA (Special Emergency Response and Assistance), a nongovernmental organization.
回到美国继续读了一个学期后，他再次前往黎巴嫩。这次他有了一个计划，创立了一个非政府组织SERA（紧急情况应急应助组织）
In summer 2013 he moved its base of operations to Gaziantep, Turkey.
2013年夏天，他将组织的指挥总部搬到了土耳其加齐安泰普。
Kassig found and delivered food and medical supplies to the growing camps on both sides of the Syrian border, his family said, and provided primary trauma care and trauma care training to civilian casualties inside Syria.
他的家人说，卡西格搜集食物和医疗物品，并将这些物资提供给叙利亚边境线两边不断扩大的战争难民营，同时他还提供简单的外科医疗援助，并对叙利亚境内的伤员进行外科的培训。
On October 1, 2013, he was "detained" on his way to Deir Ezzor in eastern Syria, his family said.
他的家人说，2013年10月1日，卡西格在去叙利亚东部的戴尔泽尔市的路上被武装分子抓走。
His family had maintained silence about Kassig's captivity at the request of his captors.
在武装分子的威胁下，他的家人对卡西格的被俘保持了沉默。