Three Cups of Tea: One Man's Mission to Promote Peace ... One School at a Time (original hardcover title: Three Cups of Tea: One Man's Mission to Fight Terrorism and Build Nations ... One School at a Time) is a book by Greg Mortenson and David Oliver Relin published by Penguin in 2007. For four years, the book remained on the New York Times nonfiction bestseller's list. In April 2011, critiques and challenges of the book and Mortenson were released. Author Jon Krakauer alleged that a number of Mortenson's claims in the book are fictitious and accused him of mismanaging CAI funds.