We look at what this means and why this historic agreement is so important. On November 4, 2019, the United States informed the custodian of its withdrawal from the agreement, which will take effect exactly one year after that date.  First, the Paris Agreement was signed by nearly 200 countries and ratified by 111 countries (including China, India and the United States). Compared to previous attempts to set global emissions targets such as the Kyoto Protocol, a consensus on threats to climate change could almost be seen as a victory in itself. Foreign Secretary Boris Johnson signs a global pact in London to reduce CO2 emissions both the EU and its member states are individually responsible for ratifying the Paris Agreement. There was a strong preference for the EU and its 28 Member States to simultaneously table their ratification instruments to ensure that neither the EU nor its Member States commit to obligations that belong exclusively to the other and there was concern that there was a disagreement over each Member State`s share of the EU-wide reduction target. just as Britain`s vote to leave the EU could delay the Paris pact.  However, on 4 October 2016, the European Parliament approved the ratification of the Paris Agreement and the EU tabled its ratification instruments on 5 October 2016 with several EU Member States.  Sir Crispin Tickell, former UK Ambassador to the United Nations, said: “Britain`s ratification of the historic Paris Agreement is an important moment, not least because our country has long been leading global efforts to deal with the effects of climate change.
This is a climate change agreement reached by nearly 200 countries in December 2015 and came into force on 4 November 2016. The agreement obliges the world`s heads of state and government to keep global warming below 2 degrees Celsius, considered by scientists to be a safe threshold, and to pursue a stricter target of 1.5 degrees Celsius. The co2 emission limits presented by countries in the Paris framework are not legally binding, but the framework of the agreement, which provides for a mechanism for periodic scarcity of these commitments, is binding. The agreement also pursues a long-term goal for zero net emissions, which would effectively eliminate fossil fuels. Some 20,000 participants are currently participating in THE UN climate talks in Marrakech, Morocco, where negotiators will discuss the details of the agreement. 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 announced plans to join the accession as soon as possible in 2016. The ratification by the European Union has achieved a sufficient number of contracting parties to enter into force on 4 November 2016. The US election of Donald Trump, who has renounced climate science and promised to withdraw from the Paris agreement, has fuelled fears of future efforts to mitigate climate change.