In this book, Stephen M. Walt, a professor of international affairs at Harvard University, reviews U.S. foreign policy and its results over the past quarter century.[1] Lloyd Green, of The Guardian website writes that Walt places the onus for what he argues is the decline of the U.S. on its foreign policy, and that he argues for an "offshore balancing strategy", under which the U.S. would allow regional actors to play out their own conflicts.[2] This foreign policy strategy is similar to the approach of ex-President Richard Nixon.[2] The author argues that the U.S. has spent trillions of dollars abroad fighting terrorists, attempting to expand democracy, or ensuring the security of other countries. He also believes that these strategies failed to achieve their goal.[1]