VALLETTA, MALTA - NOVEMBER 11: Leaders of the European Union and their African counterparts including British Prime Minister David Cameron, Prime Minister of Malta Joseph Muscat, Chancellor of Germany Angela Merkel, President of the European Council Donald Tusk, European Parliament President Martin Schultz, Minister of Foreign Affairs for Morroco Salaheddine Mezouar, President of Ghana John Dramani Mahama, Xavier Bettel Prime Minister of Luxembourg, Tunisian Prime Minister Habib Essid, President of France Francois Hollande and Prime Minister of Greece Alexis Tsipras gather for a group photograph after the first session of the Valletta Summit on migration on November 11, 2015 in Valletta, Malta. The Summit will bring together representatives from the European Union and Africa to address the challenges and opportunities presented by the largest migration of people to Europe since World War II. (Photo by Ben Pruchnie/Getty Images)
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