Britain's Queen Elizabeth II (R) and Irish President Michael D. Higgins (2R) talk at the State Banquet during the Irish president's state visit in Windsor, west of London, on April 8, 2014. Queen Elizabeth II welcomed the Irish president to Britain on Tuesday for the first time since the republic became independent with a banquet also controversially attended by former IRA commander Martin Guinness.   AFP PHOTO / POOL / DAN KITWOOD        (Photo credit should read Dan Kitwood/AFP/Getty Images)