ABSTRACT
Water diplomacy acknowledges the absence of universal solutions to complex water challenges. Instead, it offers core principles: respecting scientific facts, employing collaborative problem-solving processes, recognizing enabling conditions, practicing adaptive learning, and embracing principled pragmatism. In our epilogue to this handbook, we propose three actionable insights: making a distinction between quantifiable uncertainty and value-based ambiguity, acknowledging the importance of institutional differences in water diplomacy processes and outcomes, and, likewise, the imperative of understanding how and why context matters in a particular case. Rather than prescribing solutions, water diplomacy provides a flexible framework that balances scientific rigor with social and political realities. Looking forward, the handbook calls for a “Decade of Water Diplomacy” focused on cooperation, emphasizing that success in water governance requires building relationships that enable stakeholders to accept shared decisions even when imperfect.
