The Paris Agreement marks the beginning of a shift towards a low-carbon world – much remains to be done. Implementation of the agreement is essential to achieving the Sustainable Development Goals, as it contains a roadmap to combat climate change to reduce emissions and build resilience to climate change. Although the agreement was signed in December 2015, the treaty did not enter into force until November 4, 2016, 30 days after ratification by at least 55 countries representing 55% of global emissions. The EU and its member states are among the nearly 190 parties to the Paris Agreement. The EU formally ratified the agreement on 5 October 2016, allowing it to enter into force on 4 November 2016. In order for the agreement to enter into force, at least 55 countries representing at least 55% of global emissions had to file their ratification instruments. The level of the NDC set by each country will determine the objectives of that country. However, the «contributions» themselves are not binding under international law because of the lack of specificity, normative nature or language necessary to establish binding standards.  In addition, there will be no mechanism to compel a country to set a target in its NDC on a specified date and not for an application if a defined target is not achieved in an NDC.   There will be only a «Name and Shame» system  or as UN Deputy Secretary General for Climate Change, J. Pésztor, CBS News (US), a «Name and Encouragement» plan.  Since the agreement has no consequences if countries do not live up to their commitments, such a consensus is fragile. A cattle of nations withdrawing from the agreement could trigger the withdrawal of other governments and lead to the total collapse of the agreement.
 Because climate change fuels temperatures and extreme weather events, it endangers our air, water and food; Widespread diseases and endangers our homes and security. We are facing a growing public health crisis. Taking part in an election campaign promise, Trump – a climate denier who has claimed that climate change is a «hoax» perpetrated by China, announced in June 2017 his intention to withdraw the United States from the Paris Agreement. But despite the rose garden president`s statement that «we`re going out,» it`s not that simple. The withdrawal procedure requires that the agreement be in effect for three years before a country can formally announce its intention to withdraw. She`ll have to wait a year before she leaves the pact. This means that the United States could formally withdraw on November 4, 2020, the day after the presidential elections. Even a formal withdrawal would not necessarily be permanent, experts say. a future president could join us in a month.
The formal withdrawal has also reopened old wounds for climate diplomats. «This is certainly a blow to the Paris agreement,» said Carlos Fuller of Belize, the negotiator for the Alliance of Small Island States in the UN talks.