This document summarizes Anthony D. Smith's book Nationalism and Modernism, which provides a critical survey of recent theories of nations and nationalism. The book explores the dominant modernist approach and its varieties, as well as the main criticisms and alternatives to modernism. It aims to give students an overview of the debates in this complex field and help orient them among the differing perspectives and paradigms. While acknowledging his own theoretical leanings, the author strives to outline both the insights and problems of each major approach.