About 20 journalists are missing in Syria , many believed held by ISIS , the CPJ says . The brutal killing of James Foley recalls the murders of James Foley and others . the White House links Foley 's killing to Iraq airstrikes in U.S. and threatens another American captive . U.S. National Security Council spokeswoman Caitlin Hayden said that intelligence agencies are `` working as quickly as possible '' to determine the video 's authenticity . `` I do n't think the White House is going to pull back on this , '' a the White House security analyst says .
About 20 journalists are missing in Syria , many believed held by ISIS , the CPJ says . The brutal killing of James Foley recalls the murders of James Foley and others . the White House links Foley 's killing to Iraq airstrikes in U.S. and threatens another American captive . `` I do n't think the White House is going to pull back on this , '' a the White House security analyst says .