Why U.S. relations with Turkey are on fragile ground

The White House announced Wednesday that the U.S. will not sell billions of dollars of next-generation fighter planes to Turkey, after the NATO ally purchased advanced Russian surface-to-air missiles. Amna Nawaz talks to Admiral James Stavridis, who served as NATO's top military officer from 2009 to 2013, about what these latest developments mean for U.S.-Turkey relations that were already tense.