Michael R. Bloomberg, Founder, Bloomberg LP and Bloomberg Philanthropies, 108th Mayor of the City of New York
Walter Isaacson, President & Chief Executive Officer, The Aspen Institute
Michael R. Bloomberg is an entrepreneur and philanthropist who served three terms as Mayor of the City of New York.
Walter Isaacson is the president and CEO of the Aspen Institute, a nonpartisan educational and policy studies institute based in Washington, DC. He has been the chairman and CEO of CNN and the editor of TIME magazine.
Boris Johnson has been Mayor of London since May 2008, when he received the largest personal mandate in British political history. He was re-elected in May 2012 to serve a second four year term, and in May 2015 he was elected as the Conservative Member of Parliament for the West London constituency of Uxbridge & South Ruislip.