Cameron, de visita oficial en la Casa Blanca
British Prime Minister David Cameron speaks as U.S. President Barack Obama (R) reacts during an official Arrival Ceremony for Cameron on the South Lawn of the White House in Washington, March 14, 2012. REUTERS/Larry Downing (UNITED STATES - Tags: POLITICS)
US President Barack Obama (C-L) and British Prime Minister David Cameron (C-R) inspect the honor guards during a welcoming ceremony at the White House in Washington, DC, on March 14, 2012. AFP PHOTO/Jim Watson
U.S. President Barack Obama and British Prime Minister David Cameron talk during their Oval Office meeting at the White House in Washington March, 14, 2012. REUTERS/Doug Mills/Pool (UNITED STATES - Tags: POLITICS)