The UNECE Convention on the Protection and Use of Transboundary Watercourses and International Lakes provides invaluable insights into the contribution of this international agreement towards transboundary water cooperation via its legal provisions, accompanying institutional arrangements and subsidiary policy mechanisms.Contributing authors - experts on key aspects of the Convention - address a broad range of issues, primarily concerning its: development and evolution; relationship with other multi-lateral agreements; regulatory framework and general principles; tools for arresting transboundary pollution; procedural rules; compliance and liability provisions; and select issues including its Protocol on Water and Health.