Why ISIS poses a 'new threat' when it comes to terrorism

Aired: 12/11/2015 | 0:10:07 | Clip
Assistant Attorney General for National Security John Carlin stands at the helm of the U.S government's fight against two growing international problems, terrorism and hacking, overseeing criminal cases brought against ISIS supporters and those involving the hacking of private companies and government agencies. Hari Sreenivasan reports.

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