The DAFNE project uses a decision-analytic framework to explore sustainable management of the water-energy-food nexus in transboundary contexts. It focuses on the Zambezi River Basin across 8 countries in Africa. The objectives are to develop understanding of the nexus, generate alternative planning solutions, and foster equitable resource use without environmental harm. Key issues in the basin include trade-offs between energy production and irrigation, population growth pressures, and transboundary governance challenges. The project involves stakeholders to collect data, develop scenarios, integrate models, and identify robust management alternatives through an online negotiation simulation lab.