The Great Delusion, written by John J. Mearsheimer, a leading realist theorist of international relations, is a critical volume towards the US foreign policy, which according to the author, ultimately tries to establish a liberal hegemony. Ergo, the book is twofold: (I) it criticizes the US grand strategy after the Cold War (II) by explaining the interaction between liberalism, nationalism, and realism in international politics. To Mearsheimer, the “profoundly liberal” US foreign policy has been subject to failure since the end of the Cold War, specifically after the millennium.