Nicholas Burns

Professor of the Practice of Diplomacy & International Politics, Harvard Kennedy School

Wadah Khanfar

President & Co-founder of Al Sharq Forum & Chairman of Common Action Forum, Former Director-General of the Al Jazeera Network

Wadah Khanfar | This House Would Pressurise Israel to Exchange

Jimmy Wales

Founder of Wikipedia & Wikitribune

Hoda Kotb

Award-Winning Broadcast Journalist, Television Personality, Author & Co-Anchor of NBC News' TODAY

Felipe Gonzalez

Former President of Spain

Caroline Elkins

Professor of African Studies at Harvard University & Pulitzer Prize-Winning Author of "Imperial Reckoning"

Moby

Musician, DJ, Photographer

John Legend

EGOT Winning Musician, Producer & Philantropist

Yang Lan

Co-Founder & Chairperson of the Sun Media Group & Sun Culture Foundation; Called the 'Oprah of China'

Bill Clinton

42nd President of the United States; Founder of the William J. Clinton Foundation

Muhammad Yunus

Nobel Peace Prize Laureate & Founder of Grameen Bank; Internationally Recognized for Work in Poverty Alleviation

Lawrence Summers

Professor & Former President of Harvard University; Former Secretary of the Treasury, Director of the National Economic Council, & Chief Economist of the World Bank

Joseph Stiglitz

American Economist, Professor at Columbia University & Nobel Memorial Prize in Economic Sciences 2001

Jenny Shipley

Former & First Female Prime Minister of New Zealand; First Woman to Have Led the National Party

Diane Sawyer

Anchor, ABC World News

Mitt Romney

Former Governor of Massachusetts, 2012 Republican Presidential Nominee and CEO

Jeremy Rifkin

Leading Global Technologist, Futurist, Authority on World Economic & Environmental Trends

Jacqueline Novogratz

Founder & CEO of Acumen Fund

Geoffrey Moore

Organizational Theorist, Management Consultant & Author

Rita McGrath

Expert on Business Strategy in Uncertain Environments; Acclaimed Thinkers50 Thought Leader & Author