President Trump took a swipe at China in the second of three tweets on the issue.
He tweeted: “…Additionally, because of our much tougher Trading stance with China, I do not believe they are helping with the process of denuclearization as they once were (despite the UN Sanctions which are in place)…”
China and the US are embroiled in a tit-for-tat tariff war after President Trump complained about the size of the US trade deficit with China and what Washington sees as other unfair trade practices.
However, only two days ago President Trump said China had been a “big help on North Korea”.
Mike Pompeo might still make another trip though.
President Trump tweeted: “…Secretary Pompeo looks forward to going to North Korea in the near future, most likely after our Trading relationship with China is resolved. In the meantime I would like to send my warmest regards and respect to Chairman Kim. I look forward to seeing him soon!”
After the optimism of Singapore, the latest development might seem like quite a change.
However, there have been ups and downs in the Trump-North Korea relationship since then.
After a visit by Mike Pompeo in July, North Korea condemned his “gangster-like demands”, only for another trip to be announced, albeit now cancelled.
The summit itself was called off in May – President Trump citing Pyongyang’s “open hostility” – only for it to take place after all.
The US has made clear that it wants to see an end to North Korea’s nuclear activities before it will consider lifting economic sanctions.
The summit was seen as possible turning point after a ratcheting up of tensions.
North Korea had carried out a sixth nuclear bomb test in September and boasted of its ability to launch a missile at the US.
The US has urged the world to cut diplomatic and trade ties with North Korea following its latest ballistic missile test.
Speaking at the UN Security Council, US envoy Nikki Haley said President Donald Trump had asked his Chinese counterpart to cut off oil supplies to Pyongyang.
Nikki Haley said the US did not seek conflict but that North Korea’s regime would be “utterly destroyed” if war broke out.
The warning came after North Korea tested its first missile in two months.
North Korea said the missile fired on November 29, which it said reached an altitude of about 2,780 miles – more than 10 times the height of the International Space Station – carried a warhead capable of re-entering the Earth’s atmosphere.
The claim was not proven and experts have cast doubt on North Korea’s ability to master such technology.
However, North Korean leader Kim Jong-un called the launch “impeccable” and a “breakthrough”.
The test – one of several this year – has been condemned by the international community and the UN Security Council called an emergency meeting.
Nikki Haley warned that “continued acts of aggression” were only serving to further destabilize the region.
Russia’s Foreign Minister Sergei Lavrov said sanctions were exhausted.
He told reporters: “The Americans should explain to all of us what they are trying to do – if they want to find a pretext for destroying North Korea they should come clean about it, and the American leadership should confirm it.”
Earlier the Russian UN ambassador said North Korea should stop its missile and nuclear tests but also called on Washington to cancel military exercises with South Korea planned for December as it would “inflame an already explosive situation”.
China also suggested North Korea should stop the tests in return for a halt to US military exercises – a proposal Washington has rejected in the past.
Nikki Haley said on November 29: “We need China to do more.
“President Trump called President Xi this morning and told him that we’ve come to the point where China must cut off the oil for North Korea.
“We know the main driver of its nuclear production is oil,” she said. “The major supplier of that oil is China.”
China is a historic ally and North Korea’s most important trading partner and Pyongyang is thought to be dependent on China for much of its oil supplies.
Also in the day, the White House said that President Trump spoke to his counterpart, Xi Jinping, by phone, urging him to “use all available levers to convince North Korea to end its provocations and return to the path of denuclearization”.
Donald Trump tweeted: “Just spoke to President XI JINPING of China concerning the provocative actions of North Korea. Additional major sanctions will be imposed on North Korea today. This situation will be handled!”
Speaking in Missouri, President Trump derided Kim Jong-un, describing him as a “sick puppy” and “little rocket man”.
Xi Jinping responded by telling Donald Trump it was Beijing’s “unswerving goal to maintain peace and stability in north-east Asia and denuclearize the Korean peninsula”, Chinese news agency Xinhua reported.
Experts say the height reached by the inter-continental ballistic missile (ICBM) indicates the US could be within range, although North Korea is yet to prove it has reached its aim of miniaturizing a nuclear warhead.
Speaking to the UN Security Council, Rex Tillerson said the US would use diplomatic and financial measures against North Korea – including potential sanctions on companies or individuals with ties to North Korea – but would be willing to consider military action if necessary.
For years, he said, North Korea had dictated the terms of its dangerous course of action.
“It’s time for us to retake control of the situation,” he said.
“The threat of a North Korean nuclear attack on Seoul or Tokyo is real, and it is likely only a matter of time before North Korea develops the capability to strike the US mainland.”
The foreign minister of China, North Korea’s greatest ally, warned against military intervention.
“The use of force does not solve differences and will only lead to bigger disasters,” Wang Yi said.
“Peaceful settlement of the nuclear issue on the Korean peninsula through dialogue and negotiations represents the only right choice that is practical and viable,” he added.
Wang Yi also repeated a Chinese offer to halt Pyongyang’s military program in return for a freeze on joint US-South Korea military drills.
The US has rejected the idea in the past, saying the nuclear program must be halted first.
Russia said use of force would be “completely unacceptable”. Deputy Foreign Minister Gennady Gatilov also called on North Korea to end its nuclear and missile programs.
“The combative rhetoric coupled with reckless muscle-flexing has led to a situation where the whole world seriously is now wondering whether there’s going to be a war or not,” he told the Security Council.
“One ill-thought-out or misinterpreted step could lead to the most frightening and lamentable consequences.”