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John J. Mearsheimer, PhD (born December 1947) is an American professor of Political Science at the University of Chicago. He is an international relations theorist. Known for his book on offensive realism, The Tragedy of Great Power Politics, more recently Mearsheimer has attracted attention for co-authoring and publishing the article The Israel Lobby and U.S. Foreign Policy, which was subsequently published as a book, becoming a New York Times Best Seller. His most recent book, entitled Why Leaders Lie: The Truth About Lying in International Politics, "catalogs the kinds of lies nations tell each other." According to an interview with Mearsheimer in the Boston Globe, the lesson of the book is: "Lie selectively, lie well, and ultimately be good at what you do."

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