In the 1970s, one of the most torrid and forbidding regions in the world burst on to the international stage. The discovery and subsequent exploitation of oil allowed tribal rulers of the U.A.E, Qatar, Bahrain, and Kuwait to dream big. How could fishermen, pearl divers and pastoral nomads catch up with the rest of the modernized world? Even today, society is skeptical about the clash between the modern and the archaic in the Gulf. But could tribal...