A fisherman walks the streets of Mariel, on Cuba's northwest coast. In the distance, construction is underway on the Port of Mariel, where the government is creating a special free-trade zone. David Gilkey/NPR hide caption

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Cuban entrepreneur Barbara Fernandez Franco oversees two employees in the small living room of her home in Havana, the Cuban capital. Her boyfriend, Michel Perez Casanova (right), works in the tourism industry but also helps with her business. David Gilkey/NPR hide caption

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A man stands in line at Miami International airport to board a charter flight to Havana, Cuba. Travelers often fly to Cuba from the U.S. with piles of goods, despite a decades-long trade embargo. David Gilkey/NPR hide caption

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Hillary Clinton poses for a family photo with former President Bill Clinton, daughter Chelsea, and son-in-law Marc Mezvinsky, after attending Chelsea's Oxford University graduation ceremony last month. Matt Dunham/AP hide caption

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A book street vendor passes the time on her smart phone as she waits for customers in Havana, Cuba, on Tuesday. The Obama administration secretly financed a social network in Cuba to stir political unrest. Ramon Espinosa/AP hide caption

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William Potts, an American accused of hijacking a Florida-bound flight and diverting it to Cuba in 1984, arrives at FBI headquarters after arriving Wednesday. Potts will make an initial court appearance today. Joe Raedle/Getty Images hide caption

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A woman displays Cuban pesos, or CUP (right) and the more valuable convertible pesos, or CUC (left), in Havana Tuesday. Raul Castro's government announced that it will begin unifying the two currencies. AFP/AFP/Getty Images hide caption

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Cuba is sending thousands of badly needed doctors to Brazil, but Brazil's medical establishment has sought to block the program. Here, Cuban Dr. Yocelin Macias treats a patient in the capital Brasilia on Aug. 30. Eraldo Peres/AP hide caption

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Cuban baseball players have been defecting to the U.S. in growing numbers over the past two decades. Increasingly, smugglers play a role in getting the players off the island, U.S. baseball agents say. Gerry Broome/AP hide caption

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