What signal is Iran sending with recent missile tests?

Aired: 1/1/2016 | 0:07:03 | Clip
The landmark Iran nuclear accord is soon due to be implemented fully, but renewed tensions between that country and the U.S. could affect the deal. The U.N. has said that recent ballistic missile tests violate prohibitions, prompting possible sanctions by the Obama administration. Judy Woodruff talks to Karim Sadjadpour of the Carnegie Endowment for International Peace.