13 November 2017: The Paris Agreement on climate change has reached 170 Parties. With 27 more ratifications, the Paris Agreement will have the same number of Parties as the UNFCCC, which, with 197 Parties, is nearly universal.

Since September 2017, four countries have joined the treaty: the Czech Republic (5 October 2017), Nicaragua (23 October 2017), Switzerland (6 October) and Syria (13 November 2017). [Status of Ratification of Paris Agreement]

The Paris Agreement achieved the threshold for entry into force on 5 October 2016, and entered into force on 4 November 2016.

On 5 October 2016, the Paris Agreement achieved the threshold for entry into force. The treaty entered into force on 4 November 2016. The first session of the Conference of the Parties serving as the Meeting of the Parties to the Paris Agreement (CMA 1) took place in Marrakech, Morocco, from 15-18 November 2016.

The second part of the CMA first session (CMA 1-2) is convening during the UN Climate Change Conference, currently underway in Bonn, Germany, from 6-17 November 2017. In addition to CMA 1-2, the Conference comprises the 23rd session of the Conference of the Parties (COP 23) to the UNFCCC, the 13th session of the Conference of the Parties serving as the Meeting of the Parties to the Kyoto Protocol (CMP 13), the 47th sessions of the Subsidiary Body for Scientific and Technological Advice (SBSTA 47) and the Subsidiary Body for Implementation (SBI 47), as well as the fourth part of the first session of the Ad Hoc Working Group on the Paris Agreement (APA 1-4). [UN Climate Change Conference Webpage] [IISD RS Coverage of UN Climate Change Conference]