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China's State Councillor Dai Bingguo (L) and China's Vice Premier Wang Qishan (2nd L) greet US President Barack Obama after he addressed the opening of the first joint meeting of the US-China Strategic and Economic Dialogue in Washington July 27, 2009. US President Barack Obama called for deeper US-Chinese economic cooperation on Monday and outlined a broad agenda for a positive relationship between two countries that do not always see eye to eye. [Agencies]