Cuba's central bank chief Francisco Soberon Valdes is seen in this February 18, 2004 file photo. Cuba announced the resignation of its veteran central bank chief on Thursday June 4, 2009 as the communist-ruled state grapples with a deepening economic crisis. Valdes, who held the cabinet-level post for nearly 15 years and shaped the Caribbean country's monetary policy, was stepping down with immediate effect, a government statement said. REUTERS/Claudia Daut/Files (CUBA POLITICS BUSINESS)