Book excerpt: Analyzing the impact and benefits of nuclear energy on environment, this book examines nuclear treaties in relation to environmental protection, highlights legal framework on non-proliferation and denuclearization, explores treaties on nuclear safety and nuclear security, discusses legal regimes on management of nuclear wastes, assesses the third-party liability regime and discusses the role of IAEA, EURATOM and NEA in regulating nuclear energy. It explores nuclear energy in the context of climate change and sustainable development. This book also examines the international legal framework on notification, assistance and emergency preparedness in the event of nuclear accidents, considers legal aspects of decommissioning of nuclear power plants and main legislative trends on nuclear energy use in selected countries. It also addresses regulatory responses to nuclear energy in the wake of the Fukushima power plant nuclear accident in Japan.