WTO members are currently leveraging plurilateral negotiations to advance reforms of WTO rules. Among these efforts, the TESSD has been established to facilitate plurilateral discussions on environmental sustainability. However, TESSD’s role in promoting sustainable development within WTO negotiations is somewhat constrained. This mechanism specifically focuses on advancing plurilateral negotiations related to environmental issues and does not address broader concerns such as economic development, social rights, or FTAs.To achieve comprehensive reform of international trade rules, WTO members must establish an effective mechanism for coordinating their actions both within and beyond the WTO framework. This approach should encompass all aspects of sustainable development. To address this need, I propose the creation of a sustainable development club. This club would enhance cooperation among like-minded countries and institutionalise their collective efforts (See Sect. 7.3.3.). Through this mechanism, member countries could align their sustainable development and trade policies, develop harmonised legal norms and dispute resolution processes, and bolster their efforts to reform WTO rules.I propose that WTO members committed to sustainable development undertake a three-step process to reform the WTO’s multilateral trade rules.First, these members should sign the TSDA outside the WTO framework to establish a comprehensive sustainable trade regime. The TSDA should encompass the sustainable development values pursued by the parties, strategies to achieve these values, legal norms, dispute resolution mechanisms, and a periodic review process. Ideally, the parties would include the majority, if not all, members of the RCEP, EU FTAs, USMCA, and the CPTPP. By coordinating their development and trade policies through this sustainable development club, these major FTA parties can work together to reform WTO rules in alignment with their shared policies.Second, after signing the TSDA, the parties should issue a joint ministerial statement at the WTO Ministerial Conference to expand the TESSD’s scope to include all trade-related sustainable development issues. This step would enable the sustainable development club to influence the reform of WTO rules across all dimensions of sustainable development.Finally, the TSDA parties would negotiate various plurilateral sustainable development agreements within the sustainable development club and invite other WTO members to join these negotiations. I will elaborate on these proposals in the following sections.