For more than two decades, John J. Mearsheimer has been regarded as one of the foremost realist thinkers on foreign policy. Clear and incisive, a fearlessly honest analyst, his coauthored 2007 New York Times bestseller, The Israel Lobby and U.S. Foreign Policy, aroused a firestorm with its unflinching look at the making of America's Middle East policy. Now he takes a look at another controversial but understudied aspect of international relations: lying.