The host of the Copenhagen climate change talks made a desperate appeal to European leaders to stop arguing and open their wallets to save the prospects of a deal next month.

Nine Eastern European countries have refused to commit to an international fund to pay developing countries to go green, despite a plea from Lars Lokke Rasmussen, the Danish Prime Minister. Gordon Brown was one of the few leaders to push an EU plan to pay €10 billion a year into a global fund of €30 to €40 billion from 2020, which he warned was crucial to success in Copenhagen.

But Germany was leading another group of countries, including France, that argued it was bad tactics for the EU to show how much it was prepared to pay this far in advance of the talks.

“Some countries have a position where for strategic reasons they think we should keep the wallet in our pocket for some weeks. I really disagree,” Mr Rasmussen said.

“Copenhagen is a definite deadline and the people of the earth will be very disappointed if we do not reach a comprehensive agreement. There must be money on the table and hopefully we can agree that we are prepared to pay our share.”

Poland led the opposition from Eastern European countries who want to know how much they are in line to pay to countries in Africa and South America before signing up to a general EU commitment.

The former Iron Curtain countries argue that they cannot pay in the next few years while they adapt their own coal-based economies to meet strict EU emissions targets. Gordon Bajnai, the Hungarian Prime Minister, said that sharing costs between all nations was not acceptable for the poorer members. He said: “We want a result this weekend, but not at any price.”

But Mr Brown warned: “Unless we have a plan for funding the action we are taking on climate change we will not get agreement in Copenhagen.”

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