Professor Snyder, longtime expert on nationalism and author of a recent study of "micro-nationalisms," turns his attention to those movements which have tried to build loyalties and political institutions beyond existing national frontiers: Pan-Slavism, Pan-Germanism, Pan-Islam, Pan-Arabism, Zionism, Pan-Europe, Pan-America and many more. The studies are historically sound and quite brief. As the author notes, the cases differ widely, but in all of them "macro-nationalism," no match for the traditional nationalism of the nation-state, has had no more than limited or temporary success.