This ex-ante information could provide the foundation of the post-2020 emissions accounting system. Furthermore, if all major emitters were to provide an estimated range for their GHG emissions in an agreed future year (e.g. 2030), this would facilitate estimations of the future GHG emissions pathway. Information on how the government intends to meet its commitment (e.g. via domestic climate legislation and policies implemented or planned) together with an explanation of its level of ambition given national circumstances could help to further enhance understanding between countries on the actions being taken by others.