The chapter analyses the evolution of GT policy at the supranational level, tracing how policy priorities and approaches have changed over time and influenced the shaping of national policies and regional strategies. A special focus is placed on a JGT policy in the Western Balkans, where national policy frameworks are increasingly focused on harmonisation with European and global standards of sustainable development. Cooperation programs that enable the harmonisation of regulatory and institutional structures in this region are being researched, with an emphasis on the challenges and possibilities of their implementation. Also included are the mechanisms for integrating the GT into national strategic plans and identifying key factors that influence the fairness of transition processes. Successful implementation depends on institutional flexibility, financial support mechanisms, and strong cooperation between government, private, and civil actors to ensure economic stability, social inclusion, and environmental protection in the transition process.