Book excerpt: Armies of Arabia is the first book to comprehensively analyze the armed forces of the Gulf monarchies. Zoltan Barany explains the conspicuous ineffectiveness of Gulf militaries with a combination of political-structural and sociocultural factors. Following a brief exposition on their historical evolution, he explores the region's six armies of the region comparatively, through the lenses of military politics, sociology, economics, and diplomacy. The book'sthemes come together in the last chapter that critically evaluates the Saudi and Emirati armed forces' record in the on-going war in Yemen.