The job of defense attorneys accepted by the courts is to guide defendants in their confessions. The Government has continued restricting the ability of foreign media to operate in Cuba. Journalist visas are required and reporters whom the Government considers hostile are not allowed entry. Foreign journalists interviewing dissidents risk being detained and expelled. and in a few cases reporters have been beaten up. A Mexican television news service closed its office in Cuba in 1992. claiming it was being denied the freedom to operate effectively. "Castros Final Hour." a book written by the Miami Heralds Pulitzer Prizewinning correspondent Andres Oppenheimer.