E.U. High Representative for Foreign Affairs Federica Mogherini (L), U.S. Secretary of State Rex Tillerson (C) and Italy's Foreign Minister Angelino Alfano arrive to attend a ceremony at the Sant'Anna di Stazzema memorial, dedicated to the victims of the massacre committed in the village of Sant'Anna di Stazzema by Nazis in 1944 during World War II, Italy April 10, 2017.