Al-Qaida head killed in air strike

Aired: 6/16/2015 | 0:05:43 | Clip
With the killing of an Al-Qaeda head Nasir al-Wuhayshi in Yemen, is the group losing ground? Gwen Ifill talks with former National Security Advisor Juan Zarate on what the death of this leader means, as well as the progress of the fight against the terrorist group.

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