In this photo made from TV U.S. President Barack Obama and his wife Michelle walk past a guard of honour after arriving at Stansted Airport, London, late Monday, May 23, 2011. Obama is in London well ... more 
In this photo made from TV U.S. President Barack Obama and his wife Michelle walk past a guard of honour after arriving at Stansted Airport, London, late Monday, May 23, 2011. Obama is in London well ahead of schedule after concerns over an ash cloud spreading from a volcano in Iceland sped up his travel plans. Obama had planned to spend Monday night in Dublin and travel to London on Tuesday morning. But White House officials say the ash cloud changed course, forcing Obama to leave the Irish capital early. (AP Photo / Pool) less 
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Associated Press
Mon, May 23, 2011 6:08 PM EDT