U.S. President Obama speaks as Britain's Prime Minister Cameron, Russia's Prime Minister Medvedev and Germany's Chancellor Merkel listen at the start of the first working session of the G8 Summit at

 
U.S. President Obama speaks as Britain
U.S. President Barack Obama (top, L) speaks as Britain's Prime Minister David Cameron, Russia's Prime Minister Dmitri Medvedev (R) and Germany's Chancellor Angela Merkel listen at the start of the first working session of the G8 Summit at Camp David, Maryland, May 19, 2012. REUTERS/Andrew Winning (UNITED STATES - Tags: POLITICS)