What's driving Saudi airstrikes in Yemen?

Aired: 3/26/2015 | 0:07:30 | Clip
Yemen has become the latest flashpoint in a long conflict between Tehran and Riyadh for regional dominance. What do the new developments mean for an already smoldering Sunni-Shia split in the Middle East? Judy Woodruff talks to David Rothkopf of Foreign Policy and Trita Parsi of the National Iranian American Council.