The parents of Kayla Mueller, the American aid worker abducted in 2013 by the Islamic State, issued a statement Tuesday confirming her death, four days after the militant group claimed she had been killed in a Jordanian airstrike.
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Ms. Mueller, who had been working in Turkey for several aid organizations dedicated to helping Syrian refugees, drove into Syria on Aug. 3, 2013, and was abducted a day later.
