Donald Trump will 'pay dearly' for his threats - North Korean President vows

Donald Trump is ‘mentally deranged’ and will ‘pay dearly’ for his threats to North Korea, Kim Jong-un has said.

The strong comments from the isolated nation’s leader come just two days after the US president mocked Kim by calling him ‘rocket man’.

Kim has now fired back with a warning to the USA, according to North Korea’s state news agency.

He said: ‘I will make the man holding the prerogative of the supreme command in the US pay dearly for his speech calling for totally destroying the DPRK.’

Kim also described Trump as ‘a rogue and a gangster fond of playing with fire’.