This session aims to transition the Water-Food-Energy-Ecosystem (WFFE) Nexus from strategy to action by addressing key challenges in resource sustainability and a circular water economy. It focuses on promoting policies for water circularity, showcasing advanced modeling tools and smart treatment technologies, and breaking down institutional barriers to stakeholder integration. Ultimately, the session seeks to bridge critical knowledge gaps and build local capacity, providing policymakers and practitioners with actionable pathways to optimize resource efficiency and secure long-term environmental and economic resilience. The primary objective of this session is to move from theoretical frameworks to concrete actions by addressing the interconnected challenges of water, food, energy, and ecosystems.