Editor's note: David Buik has spent almost 50 years in the City of London, as an investment banker and broker. He is a partner at BGC Partners and a frequent media commentator on financial matters.

CNN – He may be an octogenarian but anyone who underestimates Rupert Murdoch’s business cunning and prowess does so at his or her peril.

He is probably at his most dangerous when his back is against the wall.

I enjoyed his interrogation at the Leveson inquiry and he was in imperious form when being interviewed Wednesday in the U.S. on his plans and aspirations for his media and publishing enterprises. As the old expression goes: “There’s life in the old dog yet!”

"Uncle Ru" has been deeply and irrevocably in love with newspapers since he left his mother’s womb and under the watchful eye of his father, Sir Keith, he cut his teeth on all journalistic branding irons.

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