Britain's Queen Elizabeth II reacts as Irish President Michael D. Higgins and his wife Sabina (not pictured) prepare to leave Windsor Castle in Windsor, southern England on April 11, 2014, at the end of their official visit. Higgins is the first Irish president to make a state visit to Britain since independence. AFP PHOTO / POOL / LEON NEAL (Photo credit should read LEON NEAL/AFP/Getty Images)
