His declaration, in between rounds of golf, that any North Korean "threats" would be met with "fire and fury. the likes of which this world has never seen before" was dangerously imprecise. But it was not known until now that the contacts have continued, or that they have broached matters other than USA detainees, the Associated Press reports.
The meetings, led by the US Special Representative for North Korea Policy Joseph Yun and reported on by CNN, have focused on Americans detained in North Korea, but have also touched on the relationship between the two countries.
Beyond the bluster, the Trump administration has been quietly engaged in back channel diplomacy with North Korea for several months - addressing Americans imprisoned in the communist country and deteriorating relations between the long-time foes.
Humphrey described the brinkmanship of nuclear war with North Korea as the reason why the commission needs to be established.
On Thursday, Defense Secretary James Mattis praised Tillerson's diplomatic efforts to contain North Korea, saying they were working and that they remain the favored means for solving the crisis. "I hope he will listen to them, and I hope their cooler heads will prevail".
He added a refrain heard often from the administration - that the United States will not negotiate its way to the negotiating table, and that now is not the right time for dialogue because North Korea has not shown a willingness to address issues of concern.More news: Arsenal's new €53 million man enjoys dream start to Premier League life
More news: FLASHBACK: Obama Boasted the US Could Destroy North Korea
More news: Smartphone LG V30 will be released in the Plus version
France is a member of the Security Council, which approved fresh sanctions on North Korea this month for its recent intercontinental ballistic missile testing.
On Friday, he tweeted: "Military solutions are now fully in place, locked and loaded, should North Korea act unwisely".
He described the president's threatening language as being akin to telling North Korean leader Kim Jong-un, "Go ahead, kill everybody".
A former Republican US senator from New Hampshire is urging his state's Congressional delegation to pass legislation that would set up a commission to determine President Trump's mental health. "And I think China will do a lot more".
In a press conference Friday afternoon, the president raised the specter of using military force not just against North Korea but also Venezuela: "We have many options for Venezuela, including a possible military option, if necessary", Trump said.
They included Mr Warmbier, who was imprisoned for stealing a propaganda poster and only allowed to return to the USA in June - in an unconscious state.