Defeated on the battlefield, ISIS steps up terror attacks

It's no coincidence that the number and ferocity of ISIS attacks have increased recently. More

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.

AIR DATE 7/4/16