IT HAS taken a while for Cuba’s president, Raúl Castro, to settle into the seat his brother occupied for almost 50 years. But this week he put his own stamp on the government, making the biggest changes since Fidel Castro was struck down by illness in 2006. Two long-serving senior figures—Felipe Pérez Roque, the foreign minister, and Carlos Lage, the cabinet secretary—lost their ministerial …
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