- Transboundary watercourses traversing different states present a challenge in terms of management as they constitute different states with different interests as per their national needs and different groups of people in the different states with different needs. The potential for conflict in such watercourses is great pointing to the need for cooperation between states as well as between basin users. International law provides a basis for negotiation of rules to govern transboundary watercourses. These international regimes have developed over time and in specific political-economic situations characterised by differing capacities of actors to negotiate. There is the argument that international law favours some actors at the expense of others.