Last week, North Korea successfully test fired its highest-ever nuclear-capable ballistic missile, Hwasong-15.
The test was followed by Pyongyang’s increasingly belligerent rhetoric against the US and its regional allies.
State-run KCNA called US President Donald Trump a “frightened old lunatic” and Japanese President Shinzo Abe a “cult” leader.
This comes as tensions simmer over a major US-South Korea military exercise in the region.