At the 1997 meeting, held in Kyoto, Japan, a treaty was drawn up and 84 countries signed on. It promised to limit the more developed countries' greenhouse gas emissions to 5 per cent below 1990 levels by 2012. Developing countries, of which China was one, were exempt from it. If countries failed to hit their target, they were expected to reduce their emissions even more in the second period of Kyoto, which would commence after 2012.
Since 1997, the signatories to the Kyoto Protocol have been missing their targets, or, in the case of the US, failing even to formalise their signature on the Protocol.
As 2012 approached, and with it the end of the Kyoto Protocol, some nations - Canada in particular - realised they were facing penalties if Kyoto II were brokered.