Cameron, de visita oficial en la Casa Blanca
US President Barack Obama hosts offical State Arrival cermonies for British Prime Minister David Cameron (L) on the South Lawn of the White House March 14, 2012, in Washington, DC.
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