2011 United Nations Climate Change Conference
The 2011 United Nations Climate Change Conference (COP17) was held in Durban, South Africa, from 28 November to 11 December 2011 to establish a new treaty to limit carbon emissions. A treaty was not established, but the conference agreed to establish a legally binding deal comprising all countries by 2015, which was to take effect in 2020.
Source: Wikipedia — 2011 United Nations Climate Change Conference (CC BY-SA 4.0)