The document summarizes Day 1 of a conference on water cooperation. It discusses insights from opening sessions on recognizing the needs of all water users, including future generations, and using dialogue and consensus building to resolve conflicts. Other sessions explored learning from experience in water cooperation, identifying challenges and successes. Key remarks emphasized using international conventions and alternative dispute resolution to prevent conflicts over water amid challenges of climate change, development and population growth. The document also summarizes discussions on furthering cooperation by addressing political risks and opportunities, with examples from the Sava River Basin, Hungary-Tisza cooperation, and Finland-Russia cooperation. Lessons highlighted the importance of long-term commitment, adaptive agreements, and empowering all stakeholders.