A former US diplomat, who served as the US ambassador to Bolivia, has pleaded guilty to working as a Cuban agent for over 40 years, informs BBC News. 73-year-old Victor Manuel Rocha has been accused of secretly transmitting information to the Cuban government, led by communists, since 1981 when he worked in the US State Department. On Thursday, in a Miami court, he changed his initial plea of not guilty. Mr. Rocha, his lawyers, and prosecutors acknowledged that a plea deal had been reached. Judge Beth Bloom asked him if he wanted to change his plea to guilty, to which he responded, “Your Honor…