(FILES) This file photo taken on March 16, 2016 shows UNHCR's Goodwill Ambassador Angelina Jolie Pitt greeting (C) refugees and migrants during her visit to the port of Piraeus on March 16, 2016. UN special envoy Angelina Jolie Pitt urged the international community on May 16, 2016 to respond to Europe's worst refugee crisis since World War II with generosity and not the "politics of fear". / AFP PHOTO / LOUISA GOULIAMAKILOUISA GOULIAMAKI/AFP/Getty Images