Access to water is a matter of life and death. What happens if there isn't enough to go around? We all believe we have a basic right to water - and nothing else can replace it. But some scientists believe there could be a global shortage in a matter of decades. If that were the case, how far would countries be prepared to go to protect their supplies? At the Roundtable was Aaron Wolf from the College of Earth, Ocean, and Atmospheric Sciences at Oregon State University, Peter Engelke - a senior fellow at the think tank Atlantic Council, Philippe Cullet - Professor of International and Environmental Law at SOAS, University of London; and Daanish Mustafa, author of 'Water Resource Management in a Vulnerable World'. Roundtable is a discussion programme with an edge. Broadcast out of London and presented by David Foster, it's about bringing people to the table, listening to every opinion, and analysing every point of view. From fierce debate to reflective thinking, Roundtable discussions offer a different perspective on the issues that matter to you. Watch it every weekday at 15:30 GMT on TRT World.