Les Etats unis chercheraient à poser leur véto contre une nouvelle réduction des gaz a effet de serre

Us seeks G8 climate text changes

Washington objects to the draft's targets to keep the global temperature rise below 2C this century and halve greenhouse gas emissions by 2050.

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Germany's Chancellor Angela Merkel has made climate a priority for the organisation, with backing from other leaders including Tony Blair.

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The European Union, which includes half of the G8 members, has already adopted commitments to aim for a global temperature rise of less than 2C, and to reduce greenhouse gas emissions by 20% from 1990 levels by 2020.

Japanese news organisations recently reported that Prime Minister Shinzo Abe's government was also planning to push fellow G8 members for tough targets.

But at preparatory discussions between officials of the G8 countries, US negotiators have made clear their opposition to several key components of the draft.

As well as objecting to mention of targets for global temperature rise and greenhouse gas emissions, Washington is also seeking to remove a section acknowledging that the UN is the "appropriate forum" for agreeing further action.

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Preparations for the 2005 G8 summit in the Scottish resort of Gleneagles also began with a climate change draft which grew weaker as discussions continued.

Leaders decided then to agree a weak document rather than leave with no agreement at all.