How realistic is Obama’s new Afghanistan timeline?

Aired: 5/27/2014 | 0:10:28 | Clip
President Obama declared 2014 a pivotal year in pulling nearly all U.S. troops out of Afghanistan by the end of 2016. To examine the timetable laid out by the president, Gwen Ifill gets views from former Defense Department official Michèle Flournoy and retired Army Gen. Jack Keane.