This policy brief examines the twin imperatives of mitigation and adaptation through the analytical lens of legislative frameworks in the United Kingdom, Finland, and India. Each jurisdiction demonstrates regulatory and institutional leadership in the transition toward netzero emissions, offering valuable lessons for Malaysia in crafting its own integrated climate governance. A clear path emerges for Malaysia. First, constitutional recognition of environmental rights would establish ecological integrity as a foundational principle, and enacting a Climate Change Act would offer a comprehensive legislative framework necessary for implementing binding climate policies and actions aligned with national targets. Second, it is essential to embed legally binding emissions-reduction targets to demonstrate strong government commitment and intent. This would not only ensure policy continuity beyond electoral cycles but also signal a sustained commitment from current and future administrations. Third, strengthening judicial review as a tool in climate change mechanisms is crucial to ensure that ministerial decisions remain lawful, rational, and consistent with statutory objectives. Fourth, developing an independent oversight mechanism can enhance credibility, legitimacy, and accountability of decisions and processes in climate policymaking. Further, by incorporating adaptation measures in Malaysia, binding legal mandates, paired with strategic non-binding instruments, can define responsibilities, foster coordination across all levels of government, and clarify the roles of both public and private actors. In confronting the defining challenge of our century, the question is no longer whether we act to mitigate and adapt, but how decisively and how soon.