Anthony Pratt, one of Australia’s richest men, was once given advice by the boxing champion Muhammad Ali. If you get in a fight  - run. But now, Anthony Pratt might not have that chance.

Until now, Pratt was known for heading up Australia’s second biggest private company. But then came October 5, when it was revealed that former American president Donald Trump had allegedly revealed state secrets to Pratt, in a secret meeting. Secrets he had no business hearing, even if he’s not accused of breaking any laws.

A series of leaked secret tapes and documents have revealed not just this. They also give us a peek into the channels of power. And how billionaires can pay their way to meet the most powerful people in the world - and influence them.

Today, investigative reporters Nick McKenzie and Richard Baker on the tapes that reveal the difference between what Anthony Pratt says about the powerful in public. And what he says in private.