He told the UN disarmament forum in Geneva: “My country has every reason to respond with tough counter-measures as an exercise of its right to self defence.
“The US should be fully responsible for the catastrophic consequences it will entail”.
The news comes just hours after Pyongyang launched a ballistic missile over the northern Japanese island of Hokkaido as the threat of war looms large.
He added that the US is driving the Korean peninsula “towards an extreme level of explosion” by deploying troops and military assets in the region.
More to follow…