Foreign journalists are gathering in Pyongyang on Thursday for a mysterious event planned by the reclusive state.
All that is known about this event is it's "big and important". Roughly 200 journalists have been invited, and it is formally called 'the Day of the Sun' by North Korea.
Suspicions that this event will be a new weapons test are circulating, with reports that officials have moved a potential nuclear device underground in preparation for nuclear experimentation.
The event coincides with a US fleet sailing towards the Korean peninsula by order of Donald Trump, who has said the regime in Pyongyang is "looking for trouble".
The US President has warned that if China doesn't "rein in" North Korea, the United States will step in.