John Hillen, D.Phil. is a leadership and strategy professor in the School of Business at George Mason University, a consultant, and a director for many companies. His views on leadership draw from his experiences as a public and private company CEO of several companies, a board chair and director, a U.S. Assistant Secretary of State under President George W. Bush, and a former U.S. Army officer and decorated combat leader. He holds degrees from Duke, King's College London, received his MBA at Cornell and his doctorate from Oxford. A Washington Technology columnist, he writes regularly on leadership and strategy, both of which he teaches in George Mason's MBA program. Recently recognized as one of the 100 most influential business leaders in the Washington D.C. area, he is a winner of a number of prestigious leadership awards in the military and business and the author or editor of several books on international security.Mark D. Nevins, Ph.D. is a leadership consultant to top executives and organizations large and small across a range of industries. Earlier in his career he was responsible globally for learning and development for Booz Allen Hamilton, and for organization development and human resources for Korn/Ferry. He has coached a range of executives from the C-suite to high-potential vice presidents at large companies such as American Express, Citibank, NBCUniversal, and TimeWarner, as well as smaller companies and high-growth startups. A Harvard Ph.D. and former literature professor, his views on leadership and business are informed by universal themes of the human condition. He has traveled, worked, and taught in more than 50 countries. An author and blogger, his previous work includes The Advice Business, a book on management consulting.