Under the terms of the agreement, a country can only leave the country two years after it enters into force, which means that the United States will not be able to leave the country until November 2020, by the way, a few days after the next U.S. presidential election. Prior to China`s announcement, the 23 nations that had ratified the agreement so far accounted for just over 1% of emissions. (a) to keep the global average temperature increase well below 2 degrees Celsius above pre-industrial levels and to continue efforts to limit the increase in temperature to 1.5 degrees Celsius above pre-industrial levels, the potential to significantly reduce the risks and effects of climate change; Turkey and three major oil-exporting nations are among the seven countries that have yet to ratify the 2015 Paris climate agreement. Angola joined Kyrgyzstan and Lebanon and ratified in 2020, meaning the 190-nation agreement was formally approved by 197 nations. Although the United States and Turkey are not parties to the agreement, as they have not indicated their intention to withdraw from the 1992 UNFCCC, they will continue to be required, as an “Annex 1” country under the UNFCCC, to end national communications and establish an annual inventory of greenhouse gases.  On August 4, 2017, the Trump administration formally communicated to the United Nations that the United States intends to withdraw from the Paris Agreement as soon as it is legally entitled to do so.  The formal declaration of resignation could not be submitted until after the agreement for the United States came into force on November 4, 2019 for a three-year date.   On November 4, 2019, the U.S. government filed the withdrawal notice with the Secretary-General of the United Nations, custodian of the agreement, and formally withdrew from the Paris Agreement a year later, when the withdrawal came into effect.
 After the November 2020 elections, President-elect Joe Biden promised to reinstate the United States in the Paris Agreement for his first day in office and renew the U.S. commitment to climate change mitigation.   It is rare that there is consensus among almost all nations on a single subject. But with the Paris agreement, world leaders agreed that climate change was driven by human behaviour, that it was a threat to the environment and to humanity as a whole, and that global action was needed to stop it. In addition, a clear framework has been put in place for all countries to make commitments to reduce emissions and strengthen these measures over time. Here are some key reasons why the agreement is so important: the NRDC is working to make the Global Climate Action Summit a success, inspiring more ambitious commitments to the historic 2015 agreement and enhanced initiatives to reduce pollution. The Paris Agreement is the world`s first comprehensive climate agreement.  So when Trump left the United States two years later, China was expected to follow suit by citing the injustice of letting its economic development develop, while the United States, its biggest economic competitor, remained limitless. The language of the agreement was negotiated by representatives of 197 parties at the 21st UNFCCC Conference of the Parties in Paris and agreed on 12 December 2015.   The agreement was signed at UN Headquarters in New York from 22 April 2016 to 21 April 2017 by states and regional economic integration organisations parties to the UNFCCC (convention).  The agreement stated that it would only enter into force if 55 countries that produce at least 55% of global greenhouse gas emissions (according to a list drawn up in 2015) ratify, accept, approve or adhere to the agreement.  On April 1, 2016, the United States and China, which together account for nearly 40% of global emissions, issued a joint statement confirming that the two countries would sign the Paris Climate Agreement.
 175 contracting parties (174 states and the European Union) signed the agreement on the first day of its signing.   On the same day, more than 20 countries expressed an intention to join the accession as soon as possible