( CNN) She set American combat troops in harm’s route, betrayed her own people and handed over so many secrets that experts say the U.S. may never know the full extent of the damage.

Ana Montes was the Queen of Cuba, an American who from 1985 to the September 11, 2001 assaults handed over U.S. military secrets to Havana while working as a top analyst for the Pentagon’s Defense Intelligence Agency.

But despite her crimes, Montes remains largely unknown.

You might not suppose Cuba could do much harm to a superpower like the U.S ., told retired DIA official Chris Simmons, appearing on CNN’s “Declassified.”

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