Illegal immigrants captured in the Libyan coastal city of Surman are held at a temporary prison in an eastern district of Tripoli, Libya, on Oct. 19. Hamza Turkia/Xinhua /Landov hide caption

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A survivor of the shipwreck of migrants off the Italian island of Lampedusa looks out over the water Tuesday. The tragedy has bought fresh questions over the thousands of asylum-seekers who arrive in Europe by boat each year. Tullio M. Puglia/Getty Images hide caption

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