This report synthesizes the additional information on progress in implementing enhanced action prior to 2020 in accordance with decision 1/CP.21, section IV, provided in submissions from Parties in accordance with decision 1/CP.23. This information concerned the efforts of Parties in the pre-2020 period to reduce greenhouse gas emissions, adapt to the changing climate and provide financial, technological and capacity-building support to developing countries for enhancing their climate efforts. In addition, Parties referred to the role of non-Party stakeholders in enhancing climate action in the pre-2020 period. Many of the submissions included Parties’ views on the stocktake on pre-2020 implementation and ambition that will take place at the twenty-fourth session of the Conference of the Parties.