This Regional Western Balkans Countries Climate and Development Report (CCDR) stands out in several ways. In a region that often lacks cohesive regional alliances, this report emphasizes how the challenges faced across countries are often common and interconnected, and, importantly, that climate action requires coordination on multiple fronts. Simultaneously, it illustrates the differences across countries, places, and people that require targeted strategies and interventions. This report demonstrates how shocks and stressors re intensifying and how investments in adaptation could bring significant benefits in the form of avoided losses, accelerated economic potential, and amplified social and economic spillovers.