"Global Finance in the 21st Century: Stability and Sustainability in a Fragmenting World" discusses how finance is regulated after the global financial crisis. The book argues that the current approach to global financial governance is not effective and suggests using international law and treaties to promote stability and sustainability in finance. The authors believe that promoting informality and voluntarism in finance has led to a rise in nationalism, which goes against efforts to make finance more stable and sustainable. They propose including provisions in trade and investment treaties to promote financial stability and sustainable development. The book is aimed at legal and non-legal academics, students, legal professionals, and policy-makers, offering a defense of international law as a way to govern finance and society in the 21st century.