The recent series of multi-billion dollar acquisitions of chunks of major financial institutions like Citigroup, Merrill Lynch, Morgan Stanley, Blackstone Group and Bear Stearns by foreign governments, many of them authoritarian, nontransparent and unfriendly to the West--a buyout of America’s prime symbols of economic prowess--symbolizes not only our economic decline but also the emergence of sovereign wealth funds as power brokers in international relations. These government-owned investment funds, some controlled by oil rich autocrats and some by Asian powers like China and Singapore, are pouring billions into hedge funds, private equity funds, real estate, natural resources, media conglomerates and other...