Former US diplomat to plead guilty to charges of spying for Cuba for decades

Manuel Rocha was arrested for allegedly engaging in clandestine activity' on the communist country's behalf since at least 1981

A former career US diplomat told a federal judge on Thursday he will plead guilty to charges of working for decades as a secret agent for communist Cuba, an unexpectedly swift resolution to a case prosecutors called one of the most brazen betrayals in the history of the US foreign service.

Manuel Rocha's stunning fall from grace could culminate in a lengthy prison term after the 73-year-old said he would admit to federal counts of conspiring to act as an agent of a foreign government.