The Persian Gulf state of Qatar has fewer than 2 million inhabitants, virtually no potable water, and has been an independent nation only since 1971. Yet its enormous oil and gas wealth has permitted the ruling al Thani family to exert a disproportionately large influence on regional and even international politics. Qatar is, as Mehran Kamrava explains in this knowledgeable and incisive account of the emirate, a "tiny giant" although severely...