Why the negotiations are necessary and so important?

The world need to set a new target after Kyoto Protocol and Copenhagen Accord. It is required to reduce pace with which developing countries are increasing their CO2 emissions (in order not to slow down their growth) and reduce total amount of emissions for developed countries to prevent disastrous climate and ecological changes in the nearest decades. Total reduction should be at least 20%. Some parties, such as EU, are trying to reduce amount of emissions on more that target 20%, other parties decline to take any actions. Only 25% of participants (in terms of CO2 emissions amount)took the responsibility during Copenhagen meeting. Therefore negotiations are needed without any doubts.