This document summarizes the key findings from economic modeling on the potential impacts of a successful Doha Development Round agreement in global agricultural trade and food security. The modeling shows the agreement could significantly reduce bound and applied tariffs for developing countries, increase global agricultural trade volumes by over 5% and values by nearly 7%, and provide welfare gains of over 0.1% of global income. However, if negotiations fail, the global trading system would become less resilient and developing countries could face annual income losses of over $150 billion by 2025 compared to under a successful agreement.