I think they mean that isis members would continually take captives to be executed, but not do it. After doing that many times the captives would not know when the actual execution would take place. The videos you see are of the actual executions, not the many times they didn't go through with it beforehand.
I think they mean that isis members would continually take captives to be executed, but not do it. After doing that many times the captives would not know when the actual execution would take place. The videos you see are of the actual executions, not the many times they didn't go through with it beforehand.