"Nationalism - A Very Short Introduction" is an excellent book if you want to gain an introduction to the subject. Nationalism is a new phenomenon, while its roots lie deep in the past.

Steven Grosby takes us through a brief history of nationalism, the forces that created the nationalist movements, the myths that leaders use, religion and the tendency of us humans to divide ourselves.

We are not far from our tribal roots.

One lacuna in the book: no prognosis on how he sees it developing in the future. ( )