One may wonder if the politics of the People's Democratic Republic of Yemen warrant such extensive study as Halliday has bestowed on them. He asks himself that question and comes up with a positive answer (which the book as a whole serves to justify), given the country's strategic location, its inclination to subvert and fight its neighbors, and its place in Moscow's global strategy. The author is especially concerned with the relation of social upheaval and revolutionary politics to foreign policy, where the South Yemeni experience might conform to a more widespread model. One might question whether the pattern of personal intrigues, tribal jealousies and irrelevant ideologies so richly detailed here is comparable to anything anywhere in the world. But this chronicle will certainly be of interest to specialists in the affairs of the region and to those concerned with Soviet policy in the Third World.