The book explores how regulations in banking can affect trade, especially under the GATS of the WTO. It looks at how countries can open up their banking markets while still regulating the sector. The researchers found that balancing national regulations and trade liberalization in banking is tricky due to the heavily regulated nature of the industry. They also examined commitments made by countries like the EU, USA, India, and China to open their banking markets. The book suggests that the GATS can address regulatory barriers in banking through additional rules on domestic regulations and recognizing prudential measures. The findings can also apply to insurance and securities services.