Ana Montes, considered to be one of the deadliest Cold War spies caught by the US, has been released from prison after spending more than 20 years in jail. Watch to know more.

Double agent Ana Montes who spied for Cuba freed from U.S. jail after 20 years

A few days after the US alleged Russia of hacking into its systems of government departments, Russia's President Vladimir Putin has patted the back of the country's intelligence service.

Russian President Vladimir Putin appreciates spy agency after US hack controversy

Russian President Vladimir Putin remains a formidable force in world politics. He started as a low-level KGB spy and rose to the upper echelon of power winning the top office of his country a record four times.

Vladimir Putin: Four-time President and global influencer

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Double agent Ana Montes who spied for Cuba freed from U.S. jail after 20 years

Russian President Vladimir Putin appreciates spy agency after US hack controversy

Vladimir Putin: Four-time President and global influencer