Britain's Prime Minister, David Cameron, left, during his meeting with President Barack Obama in the Oval Office at the White House in Washington, Tuesday, July 20, 2010. (AP Photo/PA, Stefan Rousseau)

Photo by: Stefan Rousseau

Britain's Prime Minister, David Cameron, left, during his meeting with President Barack Obama in the Oval Office at the White House in Washington, Tuesday, July 20, 2010. (AP Photo/PA, Stefan Rousseau)