The mystery of Stalin's death

Fifty years ago, on 5 March 1953, the Soviet leader Joseph Stalin died.

His political life as a dictator who dominated millions has been minutely dissected over the decades.

But his last days continue to provoke speculation and argument.

Did he die of natural causes following a brain haemorrhage or was Stalin killed because he was about to plunge the Soviet Union into a war its people were in no position to fight?

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