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.
The two leaders also reiterated a commitment to the denuclearization of the Korean Peninsula.
But they say the behind-the-scenes discussions could still be a foundation for more serious negotiation, including on North Korea's nuclear weapons, should President Donald Trump and North Korean leader Kim Jong Un put aside the rhetoric of recent days and endorse a dialogue.
If Trump doesn't start acting more presidential, he's likely to provoke his own crisis here at home. "I think he just threatened to be their president".
The paper said, "The powerful revolutionary Paektusan army of the DPRK, capable of fighting any war the USA wants, is now on the standby to launch fire into its mainland, waiting for an order of final attack". According to the source, the talks are being held between Ambassador Joseph Yun, the USA special representative for North Korea policy, and Pak Song Il, a senior North Korean diplomat at the country's United Nations mission, using what's known as the "New York channel", which has been an avenue of communication between the US and North Korea throughout the years.More news: Pep Guardiola forecasts end to Manchester City spending spree
The decision will not only take action against alleged Chinese violations of US companies' intellectual property rights, but could also be perceived as an attempt by the USA government to crank up the pressure on Beijing to rein in North Korea.
Chinese state media say President Xi Jinping, in a call with President Donald Trump, said all sides should avoid rhetoric or action that would worsen tensions on the Korean Peninsula.
Prime Minister Shinzo Abe says he will do everything he can to protect the Japanese people as tensions escalate over North Korean plans to send missiles flying over Japan toward Guam. "I have the best words".
On Friday, the Defense Ministry said it was deploying four of Japan's surface-to-air Patriot interceptors in western Japan to respond to a possible risk of fragments falling from missiles. "They didn't want to take on the issue and I have no choice but to take it on".
The State Department did not immediately comment on Mr Yun's diplomacy. He should be making it clear that the USA has no interest in initiating war - but that we will defend USA territories and allies with all the might at our disposal.