On June 1, 2017, President Trump announced his intention to withdraw the United States from the agreement. In response, other governments have strongly reaffirmed their commitment to the Agreement. U.S. cities, states and other non-state actors also reaffirmed their support for the agreement and promised to further intensify their climate efforts. The United States officially withdrew from the agreement on November 4, 2019; withdrawal came into effect on November 4, 2020. President-elect Biden has promised to reinstate the Paris Agreement after taking office. Currently, 197 countries – every nation on earth, the last signatory is war-torn Syria – have adopted the Paris Agreement. 179 of them have consolidated their climate proposals with official approval, including, for the time being, the United States. The only major emitters that have yet to formally accede to the agreement are Russia, Turkey and Iran. The Paris Agreement provides a sustainable framework that guides global efforts for decades to come. The aim is to create a continuous cycle that prevents countries from increasing their ambitions over time. In order to encourage increased ambitions, the agreement defines two interconnected processes, each with a five-year cycle. The first is a “comprehensive state of affairs” to assess the collective progress made in achieving the long-term goals of the agreement.
The parties will then submit new NDCs “informed of the results of the global inventory.” In 1995, the contracting parties to the climate convention adopted texts with limited and non-binding effects, but which defined fundamental principles and objectives. The Kyoto Protocol, adopted in 1997 and weakened by the non-ratification of the United States and the withdrawal of Canada, Russia, Japan and Australia, set specific binding targets, including figures for industrialized countries, without quantifying the commitment of developing countries. The Copenhagen conference (COP15) recognized the need to limit the temperature increase to 2oC above pre-industrial levels and called for an increase in the resources of industrialized countries. President Trump is pulling us out of the Paris climate agreement. While the enhanced transparency framework is universal and the global inventory is carried out every five years, the framework must provide “integrated flexibility” to distinguish the capabilities of developed and developing countries. In this context, the Paris Agreement contains provisions to improve the capacity-building framework.  The agreement recognizes the different circumstances of some countries and notes, in particular, that the technical review of experts for each country takes into account the specific capacity of that country to report.  The agreement also develops a capacity-building initiative for transparency to help developing countries put in place the necessary institutions and procedures to comply with the transparency framework.  From 30 November to 11 December 2015, France hosted representatives from 196 countries at the UN Climate Change Conference (UN), one of the largest and most ambitious global meetings ever held. The goal was nothing less than a binding and universal agreement to limit greenhouse gas emissions to levels that would prevent global temperatures from rising more than 2oC above the lower temperature levels set before the start of the industrial revolution.
InDCs become CNDs – nationally determined contributions – as soon as a country formally adheres to the agreement. There are no specific requirements as to how or how many countries should reduce emissions, but there were political expectations about the nature and rigour of the targets set by different countries.