DUBLIN, IRELAND - MAY 17: Prince Philip, Duke of Edinburgh and Queen Elizabeth Il are greeted by Chancellor of the University Dr. Mary Robinson as they visit Trinity College Dublin on May 17, 2011 in ... more 
DUBLIN, IRELAND - MAY 17: Prince Philip, Duke of Edinburgh and Queen Elizabeth Il are greeted by Chancellor of the University Dr. Mary Robinson as they visit Trinity College Dublin on May 17, 2011 in Dublin, Ireland. The Queen's visit, accompanied by The Duke of Edinburgh, is the first by a monarch since 1911. An unprecedented security operation is taking place with much of the centre of Dublin turning into a car free zone. Republican dissident groups have made it clear they are intent on disrupting proceedings. (Photo by Irish Government - Pool/Getty Images) less 
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Tue, May 17, 2011 2:00 PM EDT