Donald Trump says Australia’s ambassador to the US will not be in the job long if he’s ‘hostile’.

He warned Kevin Rudd a Trump administration would oversee his expulsion if he is ‘at all hostile’.

“He won’t be there long if that’s the case”, he said.

“I don’t know much about him. I heard he was a little bit nasty.

“I hear he’s not the brightest bulb but I don’t know much about him.

“If he’s at all hostile he will not be there long.”