Starbucks CEO: Our stock is 'undervalued'

Howard Schultz tells CNN's Poppy Harlow what's ahead for Starbucks as he prepares to step down as CEO and hand over the title to the current COO Kevin Johnson. Schultz says "I think the stock is undervalued...but as someone so close to the company and obviously so personally involved, I've never been more proud and more optimistic about our future."