Trump has said he spoke with Chinese President Xi Jinping about Pyongyang's "provocative actions", and he vowed that additional major sanctions will be imposed on North Korea. "It means we're in a race". A problem, which he claimed has solutions other than armed conflict, but added, "there's not much time left". It was North Korea's most powerful weapons test yet.
North Korea said the U.S. is "begging" for a nuclear war by planning the "largest-ever" joint aerial drill with South Korea just after concluding an exercise with nuclear-powered aircraft carriers.
The launch was a message of defiance to President Donald Trump's administration, which a week earlier had restored North Korea to a US list of terror sponsors.
Reiterating past remarks, the official said one step was to conduct an above-ground nuclear detonation or "large-scale hydrogen bomb" test. "And whether it's a success or failure isn't as important as understanding that over the years he's been learning from failures, improving, thereby increasing his threat to all of us".
South Korea's military believes that the latest missile, which flew 950 kilometers before splashing down in waters near Japan, is potentially capable of striking targets as far as 13,000 kilometers, which would put Washington within reach.
The US in response warned that Kim Jong-un's regimen would be "utterly destroyed" if its pursuit of a long-range nuclear missile arsenal provokes a military clash.
Russian Federation and China have proposed a roadmap for defusing the crisis in the region.
That sparked a strong rebuke Friday from Russia's Foreign Minister Sergey Lavrov. It has been set up under the South Korean army's Special Warfare Command.
While condemning the latest test, the Kremlin's Peskov said: "We hope that all the sides involved are able to preserve calm, which is so necessary to avoid the situation on the Korean peninsula sliding towards a worst-case scenario".
North Korea reacted angrily on Sunday to the air manoeuvres, accusing the United States and South Korea of a "grave military provocation" that will "push the already acute situation on the Korean Peninsula to the brink of nuclear war".
About 28,500 US troops are stationed in South Korea to deter potential aggression from the North.
A landmark 2014 United Nations report on North Korean human rights concluded that North Korean security chiefs - and possibly Kim himself - should face justice for overseeing a state-controlled system of Nazi-style atrocities.
Kim first made the threat in September in response to Trump's United Nations speech threatening to destroy the North and mocking him as "Little Rocket Man". The exercises come after the North fired an intercontinental ballistic missile last Wednesday.
But analysts remain unconvinced that it has mastered the advanced technology to allow the rocket to survive re-entry to the Earth's atmosphere.