Guardian: So, deal or no deal? As 120 presidents and prime ministers sat down to eat at the Queen of Denmark’s palace in Copenhagen tonight, the chances of both appeared equally high. Or low. Depending on your temperament, within 24 hours or so, the world will have a climate change agreement that should limit carbon emissions and restrict temperatures to a 2C rise; or the talks will fall apart and the chance of an agreement will be lost for ever. Gordon Brown was upbeat, while the …