The UN held their first climate convention thirty years ago. Since then the rate of growth of atmospheric CO2 has increased 340%.
“The Kyoto Protocol was an international treaty which extended the 1992 United Nations Framework Convention on Climate Change that commits state parties to reduce greenhouse gas emissions, based on the scientific consensus that global warming is occurring and that human-made CO? emissions are driving it.”
https://gml.noaa.gov/ccgg/trends/gl_gr.html
Global Monitoring Laboratory – Carbon Cycle Greenhouse Gases