article_snippet.sent: a shocking new video shows the sword used to kill the men being forged and sharpened for the executions .
article_snippet.sent: The professionally-shot film pans the scene - showing buildings irreparably damaged by bombing - before phasing into a picture of the executioner's sword being sharpened before the executions.
article_snippet.sent: Sparks fly from the sword as it is sharpened, before being used to behead the men in a brutal execution .
highlights_snippet.sent: Sick video shows the executioner's sword being sharpened before killings .
  