Differences have emerged at the outset of the first U.N. climate conference since the disappointing Copenhagen climate summit, as delegates from 175 countries begin afresh on a new global warming agreement.
Delegates to the three-day meeting beginning Friday in Bonn hope to have the main elements of a deal by the end of this year.
But they disagree on the document brokered by President Barack Obama at the December summit setting out general goals for controlling greenhouse gases blamed for causing the Earth's average temperatures to rise.
Developing countries criticize the fact that the document was negotiated by only a few countries.
U.S.-allied countries say its a breakthrough in calling for billions in aid to help poor countries fight climate change.
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