Britain's Prime Minister Gordon Brown, left, greets President Barack Obama as he arrives for the G20 summit at the ExCel centre in London, Thursday, April 2, 2009. Leaders of the world's rich and developing countries sought to dispel the clouds over the world's troubled economy -- and clear up divisions over how far to go with tougher financial regulation -- at the crisis summit Thursday.
(Photo: AP/News Team International/pool)
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