Since the agreement does not include binding emission targets or binding financial commitments beyond those contained in the UNFCCC and can be implemented on the basis of existing legislation, President Obama has decided to approve it through executive measures. Table 1 lists the mechanisms listed in the Palestinian Authority and decision 1/CP.21 and groups them together for simplicity. Together, they form a complex “regime” of interacting mechanisms. While the effectiveness of each mechanism can be assessed on its own, this report focuses exclusively on the common characteristics of these mechanisms, which have been identified as key factors, barriers and recommendations for the overall effectiveness of the PA. We therefore do not comment on the specific architecture of each mechanism. However, we recommend the continued use of the relevant literature database for each mechanism we have compiled and invite further verifications at each mechanism. The Paris Agreement (AP) is an important opportunity to coordinate and strengthen the global response to climate change and set global targets for reduction, adaptation and financing. It defines a wide range of mechanisms to achieve these goals, ranging from engaging and reviewing national contributions to involving non-state actors in global efforts to combat climate change. The Paris Conference was the 21st session of the Conference of the Parties to the United Nations Framework Convention on Climate Change (UNFCCC), known as COP 21.