BBC NEWS - As this year's UN climate summit opens, some of the developing world's biggest greenhouse gas emitters are bidding to delay talks on a new global agreement.
To the anger of small islands states,
India and have joined rich nations in wanting to start talks on a legal deal no earlier than 2015. Brazil
The EU and climate-vulnerable blocs want to start as soon as possible, and have the deal finalised by 2015.
But the process of finding that common solution, in the form of an agreement that can constrain greeenhouse gas emissions enough to keep the global average temperature rise below 2C, will entail some complex and difficult politics.
Developing countries will certainly target rich governments such as
Japan, Canada and over their refusal to commit to new emission cuts under the Kyoto Protocol, whose current targets expire at the end of next year. Russia
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