[en] This article proposes a comment on the evolution of nuclear law and regulation, and on related publications and decisions during 2020. The authors more particularly address the activity of the Council for ecological defence and reform of the mining code, the results of a survey on the health crisis and nuclear accidents (importance of the precautionary principle), nuclear activities (report by the Court of Audit on the EPR sector, decision about a classified industrial site), the decommissioning and phasing out of nuclear (definition by the ASN of the next steps of EDF reactors decommissioning, the Multi-year Energy Programming or PPE and energy objectives), basic nuclear installations (delayed commissioning of the Flamanville plant, rejecting of a request made by associations about the Flamanville plant, absence of reason for the shutting down of Fessenheim), nuclear safety and security (publication of a practical guide for the preparedness to nuclear accidents, definition by the ASN of a new policy for risk and nuisance management for basic nuclear installations, impact of the Covid-19 on nuclear regulation and controls, prevention of malevolent acts, supply of health products in case of nuclear accident, ASN report on nuclear safety and radiation protection in France in 2019), radioactive wastes (management of low-level long-live wastes, management of radioactive materials and assessment of of their possible valorisation, public debate for the preparation of the 5. PNGMDR, opinion of the CNDP about this PNGMDR, definition of a framework to promote sustainable investments), non-proliferation (decisions by the CTBTO and the EU, publication by the IAEA of an additional protocol for the guarantee agreement), and risks and victim compensation (the still difficult compensation of victims of the French nuclear tests)