North Korea; Rep. Carolyn Maloney; Josh Tyrangiel

David Sanger from The New York Times and Ian Bremmer from the Eurasia Group examine the escalating tensions between North Korea and South Korea. Representative Carolyn Maloney explains her 9/11 First Responders bill and why it's important. Editor of Bloomberg Businessweek Josh Tyrangiel examines the economic themes of this year and the challenges facing America in the next.