Is Tehran quietly backing the Taliban?

Aired: 6/13/2015 | 0:02:56 | Clip
In Afghanistan on Saturday, the Taliban attacked police in the southern province of Helmand, killing at least 20 officers and wounding two others. Now, we’re learning the Taliban may be getting an influx of outside support for some of these attacks. The alleged source? Iran. For more from Istanbul, Hari Sreenivasan is joined by the Wall Street Journal’s Margherita Stancati.