The Wealth of Nations

To Financial-services companies starving for cash during the subprime-credit crises, where bailout money comes from is less important than the fact that it's available at all. Just ask investors in Citigroup. The global banking giant has reported billions of dollars of subprime losses, raising concerns that some of Citigroup's assets might have to be sold off at fire-sale prices just to keep the company sufficiently capitalized. But on Nov. 26, New York–based Citi was handed a lifeline by an unlikely rescuer. The Abu Dhabi Investment Authority, a $625 billion sovereign wealth fund run by the tiny Persian Gulf emirate,...