On June 1, 2017, U.S. President Donald Trump announced that the United States would withdraw from the agreement. [24] Under Article 28, the effective withdrawal date of the United States is the fastest possible date, given that the agreement entered into force in the United States on November 4, 2016. If it had decided to withdraw from the UNFCCC, it could be informed immediately (the UNFCCC came into force in 1994 for the United States) and come into force a year later. On August 4, 2017, the Trump administration officially announced to the United Nations that the United States intends to withdraw from the Paris Agreement as soon as it has a legal right to do so. [25] The formal declaration of resignation could only be submitted after three years of implementation of the agreement for the United States in 2019. [26] [27] The Paris Agreement is the world`s first comprehensive climate agreement. The extent to which the alleged 21% reduction between 2005 and 2014 is due to concerted action on climate change is unclear. By comparison, in its own NDC, China claimed to have reduced the CO2 emission intensity of its GDP by 33.8% over the same period. India, one of the world`s largest emitters of greenhouse gases, has ratified the Paris Global Climate Agreement.

In 171 nations, the signing ceremony of the climate agreement set the record for most countries to sign in one day an international agreement, established as early as 1982, when 119 countries signed the Convention on the Law of the Sea. The agreement, adopted last December by the 195 parties to the United Nations Framework Convention on Climate Change (UNFCCC) at a conference called COP21 in Paris, was signed on 22 April in New York by 175 countries. India signed the historic Paris climate agreement on Friday with more than 170 nations, marking an important milestone that brought developing and developed countries together to begin reducing greenhouse gas emissions to combat global warming. The agreement can enter into force 30 days after the agreement is ratified by at least 55 parties to the UNFCCC, which account for at least 55% of global emissions.