WINDSOR, UNITED KINGDOM - APRIL 08: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Queen Elizabeth II attends the ceremonial welcome for Irish President Michael D Higgins on April 8, 2014 in Windsor, England. This is the first official visit by the head of state of the Irish Republic to the United Kingdom. (Photo by Max Mumby/Indigo/Getty Images)