Malcolm Turnbull has warned Kim Jong-un faces a formidable opponent in Donald Trump if the North Korean dictator fails to get rid of the rouge state's nuclear weapons.
The prime minister said the US president had shown - via an "unorthodox" movie trailer-style video of condominiums on North Korea's beaches - that there was a future path to prosperity and peace.
"There's the other road which is war and destruction," Mr Turnbull told Triple M on Thursday.
Mr Trump and Mr Kim promised to work towards building "a lasting and stable peace" on the Korean peninsula at a historic summit in Singapore on Tuesday.
Australia cautiously welcomed efforts to get nuclear weapons off the Korean peninsula, with Mr Turnbull giving Mr Trump credit for having a "red hot go" at denuclearisation.