Kayla Mueller's relatives release a handwritten letter that they say she wrote while in captivity in spring 2014.
원문출처 : http://edition.cnn.com/2015/02/10/world/kayla-mueller-letter/index.html?eref=edition
원문출처 : http://edition.cnn.com/2015/02/10/world/kayla-mueller-letter/index.html?eref=edition