US President Barak Obama, walks as he inspects the Scots Guards, outside Buckingham Place in London, Tuesday, May, 24, 2011. President Barack Obama and wife Michelle Obama were welcomed to Buckingham ... more 
US President Barak Obama, walks as he inspects the Scots Guards, outside Buckingham Place in London, Tuesday, May, 24, 2011. President Barack Obama and wife Michelle Obama were welcomed to Buckingham Palace in grand royal style Tuesday by Queen Elizabeth II as they began their official state visit to Britain, a rare honor for a U.S. president. less 
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Associated Press | Photo By Alastair Grant
Tue, May 24, 2011 8:55 AM EDT