Why did Luke Somers's rescue attempt go so wrong?

Aired: 12/6/2014 | 0:04:14 | Clip
U.S. special forces tried to rescue photojournalist Luke Somers from al-Qaida militants on Saturday, but the kidnappers shot Somers and another hostage, South African teacher Pierre Korkie, before the soldiers could get to them. Both hostages died. Adam Entous of the Wall Street Journal joins Hari Sreenivasan from Washington to discuss the failed mission.