Gen. John Allen on the struggle against Islamic State

Aired: 6/16/2015 | 0:08:46 | Clip
Although Kurdish-Syrian forces recently recaptured the town of Tal Abyad on Syria’s border, many are still concerned about the rise of Islamic State militants. Retired Gen. John Allen, the Special Presidential Envoy for the Global Coalition to Counter ISIL, talks to Judy Woodruff about the Islamic State group and the progress of the fight against it.