Few people have had the immense impact that Meghan O’Sullivan has had at the highest levels of geopolitics. She is a globally respected geopolitical expert who has advised the nation’s highest-ranking leaders — from President George W. Bush to Secretary of State Antony Blinken — on some of the most-complex challenges in international affairs. Currently, Dr. O’Sullivan is the Director of the Belfer Center for Science and International Affairs and the Jeane Kirkpatrick Professor of the Practice of International Affairs at Harvard University’s Kennedy School. There, she leads 300 scholars, practitioners, and staff as they advance the boundaries of international relations, security, technology, science, energy, and the environment. The Belfer Center has consistently been ranked as the world’s top academic think tank.

Joel Brenner is the former national counterintelligence executive and mission manager for counterintelligence at the Office of the National Counterintelligence (CI) Executive, which directs national, interagency CI for the government. He is the author of America the Vulnerable: Inside the New Threat Matrix of Digital Espionage, Crime and Warfare. Brenner is a cyber security expert and provides business strategies on this complex issue. He also addresses global risk management, privacy, and data security.

Currently, David has taken over as Beijing Bureau Chief for The Economist. David was the Washington bureau chief and "Lexington" columnist of The Economist from 2012 to 2018. Before that he was UK political editor and "Bagehot" columnist of The Economist and before that he was EU correspondent and "Charlemagne" columnist of The Economist. No other journalist at the magazine has written all three of those columns. The postings have given David a front-row seat as economic woes and populist political forces have upended the global world order that some had thought was settled. Over the years David has interviewed heads of state, heads of government, cabinet secretaries, and countless elected politicians and newsmakers, and reported from more than 50 countries.

Director of Harvard's Belfer Center for Science and International Affairs, Graham Allison is a leading analyst of U.S. national security and defense policy with a special interest in nuclear weapons, terrorism, and decision-making. As Assistant Secretary of Defense in the first Clinton Administration, Dr. Allison received the Defense Department's highest civilian award, the Defense Medal for Distinguished Public Service, for "reshaping relations with Russia, Ukraine, Belarus, and Kazakhstan to reduce the former Soviet nuclear arsenal."

How do you turn a t-shirt brand that’s sold from the trunk of a rusty car into a global, multi-million dollar business? Johnny Earle transformed Johnny Cupcakes into one of the world’s fastest growing independent businesses. Businessweek named him America’s No. 1 young entrepreneur, and he has been profiled by the New York Times, NPR, MTV, Forbes, Newsweek, the Boston Globe, and INC. By focusing on the customer experience (he wants buying a t-shirt to feel like your birthday), he created such a unique brand that consumers would (and do) line up around the block for his shirts.

Patrick Sweeney is an entrepreneur, angel investor, and world-record holder. He comes from the blue-collar suburbs of Boston and paid his way through state school, where he discovered rowing. He finished 2nd in the Olympic trials and earned a Top 5 MBA near the top of his class where he caught the entrepreneurial bug. He started three technology companies, sold them for millions, and left it all behind after battling a rare form of leukemia. He has used research to unlock the secrets of feat and peak performance, creating a framework to teach anyone how to achieve the life of their dreams. His mission now is to help people use fear to transform their lives and their organizations. Sweeney’s speeches demonstrate this framework with inspirational examples and actionable tips to power positive change using neuroscience, entrepreneurship, and adventures.