Chapter 10 discusses the interplay between national climate legislation and international efforts to combat climate change. The chapter outlines the key implications of the Paris Agreement for domestic law making and assesses the consistency of domestic mitigation efforts by the G20 group of countries with the Paris objectives. To be consistent with their nationally determined contributions (NDCs) to the Paris Agreement countries will need to adjust not just the level, but also the time frame and scope of their domestic climate targets. The majority of countries have yet to adopt a domestic emission target that is consistent with their NDCs. For Paris to be successful, countries also need to put more emphasis on ensuring the credibility and faithful implementation of their commitments. Success also demands a more systematic assessment of the adequacy of domestic efforts and improved national processes for monitoring, reporting and verification. Monitoring progress should focus not only on whether targets are being met, but also on their consistency with the 1.5–2°C pathway agreed in Paris.