Bloomberg Radio host Barry Ritholtz speaks with financial journalist William D. Cohan, who is the bestselling author of Money and Power: How Goldman Sachs Came to Rule the World, House of Cards: A Tale of Hubris and Wretched Excess on Wall Street, and The Last Tycoons: The Secret History of Lazard Frères & Co., among other books. A former Wall Street M&A investment banker for 17 years, Cohan is also a founding partner at the media company Puck. His latest book, Power Failure: The Rise and Fall of an American Icon, was released in November.