What Do Airstrikes in Syria Mean for ISIS Hostages?

Families await word after terror group's threats.
1:56 | 09/25/14

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Transcript for What Do Airstrikes in Syria Mean for ISIS Hostages?
Now to the terror raid overnight. Police in London taking at least nine men into custody. The latest crackdown on suspected islamic militants worldwide. Reporter: Police moved in on 19 separate locations seizing computers and documents and making nine arrests as part of an ongoing investigation as the pipeline to Isis recruits in Syria. And they have been involved in the beheadings of two Americans and one fellow Britain. Among those arrested, a radical Muslim cleric who told ABC news the beheading of James Foley by Isis was part of war and should not be considered shocking. In war, people kill each other. No matter how much it shocked the world, it has happenings. Reporter: And this morning, outrage in fransz France aver the French government confirmed that a French mountain climber who was killed in support of Isis. He was kidnapped within hours of arriving in Algeria as a tourist over last weekend. Moments of his execution came moments after president Obama spoke about the threat of Isis. The people of the world have been more ifhorrified by another brutal murder. We stand with you and the French people. Reporter: In the midst of all the new air strikes, no word at all about the remaining 15 western hostages, including two Americans in the hands of Isis. All of them have been threatened with execution. And U.S. Authorities are bracing for very bad news today. Thank you, Brian. Turn now to the powerful

This transcript has been automatically generated and may not be 100% accurate.

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