The atlas of contemporary capitalism is curious indeed. A desperately poor and civil-war-wracked nation, Liberia, is the world's shipping superpower; the Cayman Islands the fifth-largest financial center in the world; land-locked Zurich a venerable "offshore" banking center. Indeed, it is estimated that half of the global stock of money passes through tax havens. The logic of the offshore world, where millionaires and corporations roam in search...