The global threats that keep the CIA up at night

Aired: 2/10/2016 | 0:08:39 | Clip
America's top intelligence officials brought an updated assessment of worldwide threats to the U.S. to Capitol Hill on Tuesday. Their top concerns included cyber attacks, the Islamic State group, the war in Syria, North Korea's nuclear activities and a resurgent Russia. Hari Sreenivasan sits down with David Cohen, deputy director of the CIA, to explore the current geopolitical instability.