Brazil's President Luiz Inacio Lula da Silva, left, shakes hands with Fidel Rivero Prieto, president of Cuba's state oil company CUPET, as Cuba's acting President Raul Castro looks on, after signing a cooperation agreement at the Revolution Palace in Havana, Tuesday, Jan. 15, 2008. Lula da Silva is expected to grant Cuba millions of dollars in food and infrastructure credits, while signing a deal to begin exploratory oil drilling in Cuban waters within two years. (AP Photo/Javier Galeano, Pool)

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