U.S. CIA chief says social media 'greatly amplifies' terror threat

Social media and other technology are making it increasingly difficult to combat militants who are using such modern resources to share information and conduct operations, the head of the U.S. Central Intelligence Agency said on Friday. CIA Director John Brennan, in a speech in New York, said such communications only add to the difficulty of dealing with diffuse threats and attacks across the world from groups like Islamic State, known also as ISIL, and others. "New technologies can help gr