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FILE -- In a Nov. 18, 2009 file photo President ...
AP - il y a 3 heures 24 minFILE -- In a Nov. 18, 2009 file photo President Barack Obama, left, and Chinese Premier Wen Jiabao, right, gesture to each other during the arrival at Diaoyutai State Guest House before their bilateral meeting in Beijing, China. China announced Thursday Nov. 26, 2009 that Premier Wen Jiabao will take part in the Copenhagen meeting on the global effort to reduce greenhouse emissions. (AP Photo/Pablo Martinez Monsivais/file)