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Isis US hostage: Kayla Mueller 'was sentenced to death' by the militants last year, claims activist | The Independent | The Independent
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US hostage Kayla Mueller had her fingernails pulled out by ISIS before being raped | Daily Mail Online
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Kayla Mueller in Captivity: Courage, Selflessness as She Defended Christian Faith to ISIS Executioner 'Jihadi John' - ABC News
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Al-Baghdadi operation was named after US aid worker Kayla Mueller who was tortured by the IS leader | Daily Mail Online
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