Implementation of the agreement by all Member States will be evaluated every five years, with the first evaluation in 2023. The result will be used as an input for new national contributions from Member States.  The inventory will not be national contributions/achievements, but a collective analysis of what has been achieved and what remains to be done. Accountability is incorporated into the Paris Agreement through the interaction of articles on transparency and compliance. Transparency informs follow-up and reporting and ensures that there are consequences if the parties do not do what they say. Compliance with the agreement will be an institutional response if the objectives are not met. Here`s a look at what the Paris agreement does, how it works and why it is so crucial to our future. The Kyoto Protocol, a pioneering environmental treaty adopted at COP3 in Japan in 1997, is the first time nations have agreed on country-by-country emission reduction targets. The protocol, which only came into force in 2005, set binding emission reduction targets only for industrialized countries, based on the fact that they are responsible for most of the world`s high greenhouse gas emissions. The United States first signed the agreement, but never ratified it; President George W. Bush argued that the agreement would hurt the U.S. economy because developing countries such as China and India would not be included. In the absence of the participation of these three countries, the effectiveness of the treaty was limited, as its objectives covered only a small fraction of total global emissions.
Adaptation – the measures to be taken to deal with the effects of climate change – is much more important under the Paris Agreement than it has done so far under the UNFCCC. As well as the parties will make contributions to the reduction, the Agreement requires all parties to plan and implement adjustment efforts “where appropriate” and encourages all parties to report on their adjustment efforts and/or needs. The agreement also provides for a review of progress in adaptation and the adequacy and effectiveness of adjustment support in the overall inventory that will be completed every five years. Negotiations on the Paris regulatory framework at COP 24 proved to some extent to be more difficult than those that led to the Paris Agreement, as the parties faced a range of technical and political challenges and, in some respects, applied more to the development of the general provisions of the agreement through detailed guidelines. Delegates adopted rules and procedures on mitigation, transparency, adaptation, financing, periodic inventories and other Paris provisions. However, they have failed to agree on rules relating to Article 6, which provides for voluntary cooperation between the parties in the implementation of their NDCs, including by applying market-based approaches.  Centre for Climate and Energy Solutions (2015) Results of the United Nations Climate Change Conference in Paris, www.c2es.org/international/negotiations/cop21-paris/summary  Statements by world leaders at the Leaders event at COP21, unfccc.int/meetings/paris_nov_2015/items/9331.php. It will also enable the contracting parties to gradually strengthen their contributions to the fight against climate change in order to achieve the long-term objectives of the agreement. At the 2011 UN Climate Change Conference, the Durban Platform (and the ad hoc working group on the Durban Platform for Enhanced Action) were created to negotiate a legal instrument to mitigate climate change from 2020. The resulting agreement is expected to be adopted in 2015.  Currently, 197 countries – each nation on earth, the last signatory being war-torn Syria – have adopted the Paris Agreement.