The deregulation of domestic financial markets and the capital account in developing countries has frequently been associated with financial turmoil and macro volatility. The book analyzes the experience of Argentina, Brazil, Chile, China, Nigeria, Russia, South Africa, and Thailand, and draws implications for building development-friendly domestic and international financial architectures. The recommendations are made in light of the key challenge: to design and implement policies able to control macro volatility while building the rules of the financial game that will ultimately contribute to mitigating the sources of aggregate risk.