- Explores how the UN Watercourses Convention and other instruments such as the UNECE Water Convention and the 2008 ILC Draft Articles on Transboundary Aquifers interact with regional and specific agreements on shared water resources. - Examines the relationship between the UN Watercourses Convention and Multilateral Environmental Agreements. - Provides concrete illustrations of the challenges and best practices in the implementation of freshwater management and protection at the universal level.