What led to North Korea's release of two American detainees?

Aired: 11/16/2014 | 0:04:48 | Clip
Last weekend, North Korea released two American detainees, Kenneth Bae and Matthew Todd Miller. The deal that led to their release was negotiated by James Clapper, the U.S. National Intelligence Director. Adam Entous from The Wall Street Journal joins Hari Sreenivasan from Washington with details on that deal.