US President Donald Trump: North Korea's Kim acting 'very, very badly'

President Donald Trump talks to press corps inside Air Force One at the Palm Beach International Airport. Photo / AP

US President Donald Trump has criticised North Korean leader Kim Jong Un, saying he was "acting very, very badly".

Trump made the comments to reporters while departing his Mar-a-Lago resort in Florida, where he spent the weekend.

Trump said Administration officials had meetings during the weekend about North Korea, among other issues.