A former career US diplomat who had served as the US ambassador to Bolivia has pleaded guilty to working as an agent of Cuba for more than 40 years. Victor Manuel Rocha, 73, was charged with secretly passing information to the communist-run Cuban government since 1981 while working for the US state department. On Thursday, he changed his initial not guilty plea in a court in Miami. He is due to be sentenced at a hearing on 12 April. The move brings one of the highest profile espionage cases between Cuba and the US to an unexpectedly rapid conclusion. The Cuban spying case that has shocked the US government Thursday's court hearing was supposed to be about how to handle classified documents involved in the case, according to the Miami Herald. But instead, Mr Rocha, his lawyers, and prosecutors acknowledged that a plea deal had been struck. When Judge Beth Bloom asked him if he wished to change his plea to guilty, he responded: "Your honour, I am in agreement." He is charge...