NEW! Spanish version. Countries communicate their plans to implement the Paris Agreement through Nationally Determined Contributions (NDCs). What should these NDCs contain? What “information to facilitate clarity, transparency, and understanding” do countries need to provide? How should countries account for their actions? What happens if they fail to meet their NDC goals? Read our updated Pocket Guide, which now includes the provisions of the Paris rulebook, to find answers to these and other questions related to NDCs.