August 22, 2014 -- Updated 1928 GMT (0328 HKT) Edited by Simon Rushton in Atlanta

Although James Foley's killer is masked in black, some distinguishing features can be picked out -- but the biggest clue may be in his voice. OVERCOMING ISIS?

OPINION
Calling ISIS "evil" makes it easier to kill its fighters but we should also try to understand them.
MH17 AFTERMATH
One of the first observers at the MH17 crash site in Ukraine describes the harrowing scene.
ICE BUCKET CHALLENGE
Four U.S. firemen hurt after social media challenge for charity goes drastically wrong.
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