Former U.S. Federal Reserve chairpersons Volcker, Greenspan, Bernanke and Yellen, are together at the International House, on the campus of Columbia University, in April 2016, in a forum hosted by journalist Fareed Zakaria. The discussion covers topics related to the financial crisis of 2008 and its aftermath, with quantitative easing, Fed communication as policy tool, and the gradual increase in interest rates.