Copenhagen: The UN Copenhagen climate talks were thrown in disarray Tuesday after developing countries reacted furiously to a leaked document that shows world leaders will next week be asked to sign an agreement that hands more power to rich countries and sidelines the UN's role in all future climate change negotiations.

The document also sets unequal limits on per capita carbon emissions for developed and developing countries in 2050; meaning that people in rich countries would be permitted to emit nearly twice as much under the proposals.

The so-called Danish text, a secret draft agreement worked on by a group of individuals known as ‘the circle of commitment' but understood to include the UK, US and Denmark has only been shown to a handful of countries since it was finalised this week.

The agreement, leaked to the Guardian, is a departure from the Kyoto protocol's principle that rich nations, which have emitted the bulk of the CO2, should take on firm and binding commitments to reduce greenhouse gases, while poorer nations were not compelled to act.

The draft hands effective control of climate change finance to the World Bank; would abandon the Kyoto protocol, the only legally binding treaty that the world has on emissions reductions; and would make any money to help poor countries adapt to climate change dependent on them taking a range of actions.

The document was described by a senior diplomat as "very dangerous for developing countries. It is a fundamental reworking of the UN balance of obligations. It is to be superimposed without discussion on the talks."

A confidential analysis shows deep unease over details of the text. In particular, it is understood to: Force developing countries to agree to specific emission cuts and measures that were not part of the original UN agreement;

Divide poor countries further by creating a new category of developing countries called "the most vulnerable";

Weaken the UN's role in handling climate finance;

Not allow poor countries to emit more than 1.44 tonnes of carbon per person by 2050, while allowing rich countries to emit 2.67 tonnes.