Disagreements between rich and developing countries came into the open today as the world's top 20 greenhouse gas emitters worked to lay the groundwork for a new deal on climate change. The developed and developing countries were wrapping up two days of talks hoped to jumpstart negotiations on a successor to the Kyoto Protocol. But developing countries voiced scepticism about the meeting, saying they should not be considered in the same league as major industrialised countries when deciding on future cuts to gas emissions blamed for global warming.