To contribute to the objectives of the agreement, countries presented broad national climate change plans (national contributions, NDCs). These are not yet sufficient to meet the temperature targets, but the agreement sets out the way forward. No country was able to denounce its withdrawal from the agreement before the expiry of a period of three years from the date of ratification. The agreement stipulates that it would only enter into force (and therefore fully operational) if 55 countries emitting at least 55% of global greenhouse gas emissions (according to a list established in 2015)  ratify, accept, approve or accede to the agreement.   On April 1, 2016, the United States and China, which together account for nearly 40% of global emissions, made a joint statement confirming that the two countries would sign the Paris climate agreement.   175 parties (174 states and the European Union) signed the agreement on the first day of its entry for signature.   On the same day, more than 20 countries made a declaration of intention to accede as soon as possible in order to accede in 2016. With ratification by the European Union, the agreement obtained enough parts to enter into force on 4 November 2016. A proposal by BNP Paribas Asset Management secured a 53% majority at Chevron – it asked the oil giant to ensure that its climate lobby is in line with the goals of the Paris Agreement. Article 28 of the Agreement allows the parties to terminate the contract after having sent a notification of resignation to the depositary. The denunciation may take place for the country no earlier than three years after the entry into force of the agreement.
The revocation shall take effect one year after the notification of the depositary. The agreement also provides that withdrawal from the UNFCCC, under which the Paris Agreement was adopted, would also remove the state from the Paris Agreement. The conditions for exiting the UNFCCC are the same as those of the Paris Agreement. The agreement does not contain provisions on non-compliance. Under the Paris Agreement, each country must define, plan and regularly report on the contribution it makes to controlling global warming.  No mechanism obliges a country to set a specific emissions target before a given date, but each target should go beyond the targets set previously. The United States formally withdrew from the deal the day after the 2020 presidential election, although President-elect Joe Biden said America would join the deal after his inauguration.  “This is certainly a big blow to the Paris Agreement,” said Carlos Fuller of Belize, the negotiator for the Alliance of Small Island States at the UN talks. .