Associated Press
FILE - In this Dec. 21, 2007 file photo, Venezuela's President Hugo Chavez, top center, shakes hands with Haiti's President Rene Preval as Cuba's acting President Raul Castro, far left, looks on during the inauguration of the IV Petrocaribe summit in Cienfuegos, Cuba. Now nervous Cubans are worrying about a return of hard times following the March 5, 2013 death of Chavez, whose billions of dollars of oil largesse helped the island's economy function. More than a dozen countries besides Cuba in Latin America and the Caribbean, many of them economic minnows, have benefited to the tune of billions of dollars from the Petrocaribe pact, created in 2005 with the goal of unifying the regional oil industry under Venezuelan leadership and countering U.S. influence. (AP Photo/Dado Galdieri, File)

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