According to the FBI affidavit, Montes, who had a high-level security clearance, spied for Cuba for at least five years, and possibly longer. She identified at least one U.S. undercover agent to the Cubans, disclosed a top-secret intelligence-gathering program and reported on U.S. training in the Caribbean, the FBI said. Current and former U.S. officials say she was in a position to tell have told Havana virtually everything the intelligence community knew about Cuba's military and might even have disclosed U.S. contingency plans for taking the island by force.***