Diane Sawyer

Anchor, ABC World News

Ray Zahab

Ultra-marathon Runner and Adventurer; Host, "The Project"; Author of "Running for My Life"

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

Sarah Lacy

Technology Journalist; Founder & CEO of PandoMedia and Chairman Mom

Matthew Bishop

Nonresident Senior Fellow of Global Economy and Development at the Center for Sustainable Development

John Wood

Founder & Board Co-Chair of Room to Read; Former Microsoft Marketing Executive

Dan Abrams

Chief Legal Affairs Anchor at ABC News & Founder of Abrams Media

Mavis Leno

Chair of the Campaign to Help Afghan Women & Girls

Charles Leadbeater

Innovation Expert & Author

Amy Myers Jaffe

Leading Expert on Global Energy Policy & Sustainability

Garry Kasparov

World Champion Chess Expert & Strategist; Chairman of the Human Rights Foundation based in New York

Sebastian Copeland

Adventurer, Environmental Activist, Award-Winning Photographer, Author, Lecturer & Founder of the Sedna Foundation

Robert Cialdini

New York Times Best-Selling Author; The Foundational Expert in the Science of Influence & Persuasion

David M. Rubenstein

Co-Founder & Co-CEO of The Carlyle Group

Norman Ornstein

Bestselling Author, Political Analyst & Resident Scholar at the American Enterprise Institute

Hugh Evans

Humanitarian; Founder & CEO of Global Poverty Project

Vali Nasr

Professor of International Affairs & Middle East Studies at Johns Hopkins University

Islamic Leviathan: Islam and the Making of State Power (Religion and Global Politics)

Marco Tempest

Cyber-Illusionist

Harvey Mansfield

Political Philosopher, Author & Distinguished Professor

Ambassador Dennis Ross

Author, Counselor & William Davidson Distinguished Fellow at The Washington Institute; Former Special Assistant to President Obama