President Obama, right, and British Prime Minister David Cameron, left, talk in the Oval Office of the White House in Washington, Tuesday, July 20, 2010. (AP Photo/Pablo Martinez Monsivais)

Photo by: Pablo Martinez Monsivais

President Obama, right, and British Prime Minister David Cameron, left, talk in the Oval Office of the White House in Washington, Tuesday, July 20, 2010. (AP Photo/Pablo Martinez Monsivais)