Donald Trump is keeping expectations low, ahead of tonight's highly anticipated summit with Vladimir Putin.

The US president has landed in Helsinki ahead of his meeting with the Russian president.

Trump is predicting nothing bad, and maybe some good, from tonight's meeting.

US correspondent Richard Arnold told Mike Hosking it's unclear what format the meeting will take, and what they'll discuss.

"It is not clear what the summit's agenda is as the President [is keeping expectations low]. In terms of atmospherics though, the President has suggested he wants a repeat of the North Korea summit, the results of which remain debatable."

LISTEN TO RICHARD ARNOLD TALK WITH MIKE HOSKING ABOVE