The agreement announced on Saturday morning after all-night negotiations in Kigali, Rwanda, caps and reduces the use of HFCs, a key contributor to greenhouse gases in a gradual process beginning in 2019, with action by developed countries including the US, the world’s second worst polluter. In addition to today’s amendment, countries last week crossed the threshold for the Paris Agreement to enter into force and reached a deal to constrain international aviation emissions

Key Takeaways:

• More than 100 developing countries, including China, the world’s top carbon dioxide emitter, will start taking action in 2024, sparking concern from some groups that the action would be implemented too slowly to make a difference.
• President Barack Obama praised the deal on Saturday morning, calling the agreement “an ambitious and far reaching solution” to a “rapidly growing threat to the health of our planet”.
• The US and other western countries want quick action. Nations such as India want to give their industries more time to adjust.

“A small group of countries, including India, Pakistan and some Gulf states, also pushed for and secured a later start in 2028, saying their economies need more time to grow.”

https://www.theguardian.com/environment/2016/oct/15/climate-change-environmentalists-hail-deal-to-limit-use-of-hydrofluorocarbons