In the second of an epic two-part series about the espionage wars between East and West, top intelligence historian Calder Walton talks Putin, disinformation and the decline of the Soviet Union. We talk about how Putin, the former KGB officer, turned his former service into a private mafia army. We turn to the threat from China, whose intelligence gathering operation against the West is on a scale never seen before.

Buy Calder's book here.

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