Water diplomacy and nexus governance in a transboundary context: In the search for complementarities

Growing evidence within nexus research has highlighted the importance for sustainable governance of considering the interdependencies between water, energy, food and the environment, whereas water diplomacy has provided the necessary tools to address water conflicts of a transboundary nature. This paper therefore identifies and evaluates unrealised complementarities between nexus governance and water diplomacy, and discusses the benefits of integrating both for improved transboundary basin management. Two case studies - a wastewater treatment plant within the Jordan's nexus vision and a research project into management of the transboundary Zambezi River Basin - illustrate the identified complementarities and their contribution towards collaborative transboundary natural resources management. On one hand, the consideration of synergies and trade-offs between water, energy and food systems and beyond the river basin scale within nexus governance engages a larger diversity of stakeholders and can help realise more balanced agreements between sectors and hence complement water diplomacy goals. The enriched negotiations arising from a nexus approach can facilitate benefits-sharing in water diplomacy due to the broader exchange of experiences across several natural resources systems. Likewise, international nexus development projects involving a diverse range of sectors and stakeholders can ultimately facilitate peace building through inter-state cooperation and reduce the focus on disputed natural resources. On the other hand, water diplomacy provides tools to address complexity and capture political contexts that overcome the traditional technical and 'most-rational-solution' methods. With the application of joint fact finding, value creation and collaborative adaptive management, the added value includes the generation of a shared understanding that embeds politics in decision-making and promotes mutual gains. Further collaboration and on-the-ground experiences between researchers, policy makers and the private sector are needed, to acknowledge and act upon the complementarities of nexus governance and water diplomacy, with the final outcome of promoting cooperation in the management of transboundary resources.