Donald Trump is still ruffling feathers as President, amid reports that he tore into Malcolm Turnbull over a "dumb" refugee swap deal, and then slammed the phone down after just 25 minutes.

The Australian Prime Minister may feel a bit bruised, but he - and fellow world leaders - have to remember that they're dealing with a different kind of President. Donald Trump is a businessman at heart; he is transactional and sees the entire world like a profit and loss sheet. His outlook isn't the same as that of other leaders like Mr Turnbull and career politicians in Europe. That is why people are getting confused by his manner.

The conventional view of America among world leaders is that it is ready to stand up for allies, liberal democracies and free trade no matter what. But President Trump sees it differently. If America is going to be great again, he feels someone is going to have to pay the price.

Previous Presidents would think of their alliances in terms of what good they do for the world. President Trump thinks they could do much more for America. The United States shares intelligence, but seems to be getting little back for its hard-won secrets. And now Mr Trump finds that Mr Turnbull is expecting him to honour a deal made with his predecessor to take in 1,250 refugees from an Australian detention centre. No wonder he pushed back.