Defeated on the battlefield, ISIS steps up terror attacks

Aired: 7/4/2016 | 0:06:04 | Clip
There's no coincidence that the number and ferocity of ISIS terror attacks have increased in recent weeks as their losses on the battlefield mount. John Yang discusses the significance of the timing with Joby Warrick, author of "Black Flags: The Rise of ISIS," and Rukmini Callimachi of The New York Times.