This looks like Kim rattling his saber to enhance his perceived bargaining position before the summit. But it could also be the whole thing falling apart.
North Korea has said it may pull out of a summit with US President Donald Trump if the US insists it gives up its nuclear weapons.
The highly anticipated meeting between Mr Trump and North Korea’s Kim Jong-un is due to take place on 12 June.
But in an angry statement, North Korea’s vice-foreign minister accused the US of making reckless statements and of harbouring sinister intentions.