Kayla Mueller's family and U.S. government officials say they went to great lengths to try to rescue the 26-year-old humanitarian worker -- efforts that ultimately failed.
원문출처 : http://edition.cnn.com/2015/02/12/middleeast/mueller-rescue-attempts/index.html?eref=edition
원문출처 : http://edition.cnn.com/2015/02/12/middleeast/mueller-rescue-attempts/index.html?eref=edition