On 12 December 2015, the so-called Paris Agreement was adopted by 195 countries at the 21th Conference of the Parties (COP 21) of the United Nations Framework Convention on Climate Change (UNFCCC), held in Paris. On the 22 April 2016, with a high-level ceremony at the United Nation in New York, the agreement was open for signature by the states and it will remain open for one year. The signatures are subject to the ratification. This means that the signature alone does not impose any obligations to the signatory state until the agreement is ratified. In many instances, the government does the signature, while the ratification needs the approval of the national parliament. The agreement will enter into force when at least 55 countries, representing at least 55% of global green house gas (GHG) emissions will ratify the agreement. As of 29 June 2016, 178 countries, including the EU, signed the Paris Agreement, almost all did it on the 22 April. Of those, 19 countries, mostly small island countries, also ratified the agreement, they cover 0.18 % of the global GHG emissions.