thank you very much dick costolo. thanks for joining us.e back, any typical comment from treasury secretary steven mnuchin out of davos this week, the president saying those comments were misinterpreted well, former treasury secretary larry summers called mnuinch's comments very problematic. he joins us to explain stay with us successful people have one thing in common. they read more. how do they find the time? with audible. audible has the world's largest selection of audiobooks. for just $14.95 a month, you get a credit-good for any audiobook. and you can roll your credits to the next month if you don't use them. audible members get free, no-hassle exchanges... ...and use the mobile app to listen anytime, anywhere. start a 30-day trial and your first audiobook is free. listening, is the new reading. text "audio 4" to five hundred five hundred to start listening today. >>> good morning everybody i'm sue herera here's your cnbc news update at this hour. turkish president erdogan vowing to expand military operation against the kurds in nort