US Democratic presidential candidate Senator Obama waves as he leaves 10 Downing Street in London

 
US Democratic presidential candidate Senator Obama waves as he leaves 10 Downing Street in London
US Democratic presidential candidate Senator Barack Obama (D-IL) waves as he leaves 10 Downing Street in London, July 26, 2008. REUTERS/Jim Young (BRITAIN) US PRESIDENTIAL ELECTION CAMPAIGN 2008 (USA)