A Cuban spy who was captured and imprisoned in the U.S., and later released in a prisoner swap with Cuba, has been making official visits overseas, including to Russia, for the island’s government, raising questions about his role, especially after his trip followed visits by the head of Cuba’s intelligence and security services. During a two-week trip that started mid-May, Cuba’s Minister of the Interior, Gen. Lázaro Alberto Álvarez Casas, met with the Vietnamese minister of Public Security, China’s minister of Public Security and Russian Security Council Secretary Nikolay Patrushev, whom he ...