Definition: In this task, you are given a text of many news articles seperated by special token "|||||". Your task is to summarize them.
Input: KABUL -- Gunmen killed 10 members of a medical team, including six Americans, traveling in the rugged mountains of northern Afghanistan, demonstrating the reach of insurgents far from their traditional havens and shocking the expatriate community here. 
  
 The attack was one of the deadliest on civilian aid workers since the war began in 2001. That it occurred in Badakhshan province, a scenic mountain redoubt considered a peaceful refuge from the war, added to growing concern that the Taliban has seized on northern Afghanistan as its latest front. 
  
 The dead have not been officially identified, and the bodies not yet returned to Kabul, but Afghan and Western officials said the victims were thought to be members of a medical team working with a Christian charity group that has decades of experience in Afghanistan. That team, from the International Assistance Mission, lost contact with its office in Kabul on Wednesday, two days before the attack, said Dirk Frans, the group's executive director. 
  
 "We've got a team that has gone missing, and then there are 10 people found dead. At the moment we're working on the assumption that this is the same team," Frans said. 
  
 The Taliban quickly asserted responsibility for the killings, saying the medical workers were "foreign spies" and were spreading Christianity. But police officials have not ruled out robbery as a motive, as the victims were stripped of their belongings after they were shot. 
  
 The team members -- six Americans, one German, one Briton and four Afghans -- were returning from neighboring Nurestan province, where they had spent several days administering eye care to impoverished villagers. They were traveling unarmed and without security guards, Frans said. 
  
 The dead are thought to include the team's leader, Tom Little, an optometrist from New York who had worked in Afghanistan over the past four decades. Little, a fluent Dari speaker, had been thrown out of the country by the Taliban in 2001 during a crackdown on Christian aid groups. Three of the victims are thought to be women, including Karen Woo, a British surgeon who had written on her blog about the possible risks of traveling to the area. 
  
 Two of the Afghans were unharmed. 
  
 The group is registered as a Christian nonprofit organization. Although its members do not shy away from this affiliation in this conservative Muslim country, Frans and others said they do not proselytize. In their work since 1966 on health and economic development projects, under King Zahir Shah, the Russians, the mujaheddin government and the Taliban, Frans said, "all along we've been known as a Christian organization. That has been a nonissue." 
  
 "This is truly a bedrock institution in Afghanistan," said Andy M.A. Campbell, the Afghanistan country director for the National Democratic Institute. "They have been around for decades." 
  
 Others who have worked with the group described it as culturally sensitive to the Muslim values of Afghanistan and staffed by foreigners committed to long-term development work in the country. "This is not a Mickey Mouse organization," said a person who has worked for and evaluated the organization's projects in the past. 
  
 The Taliban has targeted foreign aid workers in the past but such attacks are relatively rare, and insurgents have allowed some aid groups safe passage into areas they control. In August 2008, gunmen killed three women from the International Rescue Committee and their Afghan driver in Logar province. Four years earlier, 11 Chinese road workers were shot to death in Kunduz province. ||||| A female British doctor is understood to be among at least 10 people murdered by gunmen in the far north of Afghanistan on Friday. 
  
 The group included eight foreigners – one of them a Briton – six Americans and a German working for a project run by a small Christian aid organisation called International Assistance Mission (IAM). 
  
 A Taliban spokesman claimed responsibility saying the attack was on "Christian missionaries" who were carrying bibles. It is possible the Taliban were simply exploiting early media reports about killings they in fact had nothing to do with. 
  
 A British doctor called Karen Woo was known to be on the expedition and played a major part in organising it, including by running fundraising events in London and Kabul to pay for the "Nuristan Medical Expedition 2010". 
  
 She was set to return to the UK to marry her fiance Mark "Paddy" Smith, a British security worker. Speaking from Afghanistan last night, Smith said their relationship "just made sense". "It was one of those crazy relationships. Nothing is normal in Afghanistan, but when we met it just made sense. You know when something is right and this was just right," he said. 
  
 Woo's brother, David, said that the couple planned to live in the UK and start a family together. "Karen was a lovely, vibrant and energetic woman, determined to get the most out of life," he said. "She and Mark just clicked. She said he was the one. Their long-term plan was to come back to the UK and start a family together." 
  
 Woo, from London, had established an organisation called Bridge Afghanistan to help run medical projects in the country. 
  
 Writing on the expedition's Facebook page, Woo described herself as the team doctor and said she would run the mother and child clinics inside Nuristan. She wrote that the team also included an eye doctor and a dental surgeon. 
  
 According to IAM the group were returning from a several week long trip to provide basic health in a remote area of Nuristan province when they were attacked by gunmen in a forested area of Badakhshan, the most north-eastern of Afghanistan's provinces. 
  
 Their bullet-riddled bodies were discovered by local officials on Friday next to three shot-up vehicles. 
  
 Dirk Frans, the director of the Christian organisation, said IAM had last been contacted by the group via satellite phone on Wednesday. 
  
 In a short statement on its website, the organisation said the victims were likely working on the organisation's "eye camp team" project in Nuristan at the invitation of local communities and were returning to Kabul when they were attacked. 
  
 "At this stage we do not have many details but our thoughts and prayers are with the families and friends of those who are presumed killed. If these reports are confirmed we object to this senseless killing of people who have done nothing but serve the poor. Some of the foreigners have worked alongside the Afghan people for decades." 
  
 General Agha Noor Kemtuz, the local police chief, told the Observer they were having lunch in heavily forested area at around 2pm when around 10 gunmen arrived and took all their money before shooting them one by one. 
  
 "They had been warned by locals not to stay in the forest because it is not safe," he said. 
  
 He said the only surviving member of the party was an Afghan man called Safiullah whose life was saved after he desperately recited passages from the Koran as the gunmen were executing the other people. 
  
 General Kemtuz said there had been 11 people in the party including three Afghans and eight foreigners. 
  
 Whilst the US embassy confirmed it believed several Americans were among the dead, the British embassy was unable to confirm whether any British citizens were killed. 
  
 "We are aware of the reports and are actively investigating them with local authorities and others in country," a spokeswoman for the embassy said. 
  
 Woo described the trip into the remote area of Nuristan in gruelling terms, saying much of it would be done on foot and with pack horses, travelling 120 miles and climbing 16,000ft at one point. 
  
 "The expedition will require a lot of physical and mental resolve and will not be without risk but ultimately, I believe that the provision of medical treatment is of fundamental importance and that the effort is worth it in order to assist those that need it most," she wrote. 
  
 With local officials reporting that almost everything of value was removed from the vehicles, it is widely assumed that robbery was the main motivation for the attackers. 
  
 However, a spokesman for the Taliban told the Associated Press that the hardline insurgent movement killed the group because they were "preaching Christianity" and "spying for the Americans". 
  
 The NGO, which has been operating in Afghanistan since 1966, describes itself as a non-profit Christian organisation that works on health projects and economic development. 
  
 However, there are many such Christian aid organisations operating in Afghanistan all of whom take enormous care not to be seen to be proselytising or seeking to convert Afghans. Such allegations, including some in May against Norwegian Church Aid, can quickly stir up enormous public controversy. |||||
Output:
Many of the details surrounding the execution of 10 aid workers, including six Americans, in Afghanistan are still being sorted out. But one of the victims, British surgeon Karen Woo, knew the dangers. "The trek will not be easy," she wrote beforehand of the journey to Nurestan, which entailed a 120-mile hike in the mountains. "The expedition will require a lot of physical and mental resolve and will not be without risk but ultimately, I believe that the provision of medical treatment is of fundamental importance and that the effort is worth it in order to assist those that need it most," wrote Woo, who was engaged to be married. She was traveling with a Christian group known as the International Assistance Mission when they were stopped, robbed, and murdered. The Taliban has claimed responsibility. The Washington Post and the Guardian have more details on Woo.