FBI: Only 'a dozen' U.S. extremist fighters in Syria

Only around a dozen American are fighting with extremist groups in Syria, according to FBI Director James Comey.
He told reporters: "When I use a number of more than 100, that means people who have gone and come back, people who have gone and stayed.
"The figure I've been operating with is, ballparkish, a dozen still fighting there with terrorist group."