North Korea is “ready to sink” a US aircraft carrier heading for the peninsula, state media have said.
A commentary in the Rodong Sinmun newspaper warned that the USS Carl Vinson could be sunk “with a single strike”.
A battle group headed by the Vinson is expected off the peninsula this week.
It was despatched by President Donald Trump amid a warning that US “strategic patience” over the North’s nuclear ambitions had come to an end.
Tension also rose after a recent failed missile test by the North and a massive military parade showing off its latest hardware.