What cannot be overlooked is that Pyongyang has announced a plan, as a grave warning to the United States, to simultaneously fire four Hwasong-12 ballistic missiles to waters around Guam, a Pacific island territory of the United States.
A war between the US and North Korea would be disastrous for the region.
A White House readout of the call said two leaders had agreed that "North Korea must stop its provocative and escalatory behaviour" and that new UN sanctions on Pyongyang were "an important and necessary step" towards peace and stability on the Korean Peninsula.
"This situation is beginning to develop into this generation's Cuban Missile crisis moment", ING's chief Asia economist, Robert Carnell, said in a research note.
China has repeatedly called for a resumption of long-dormant six-party talks to peacefully resolve the mounting tensions, but its position has been overshadowed by the emerging game of brinkmanship.
Though dwarfed by the U.S.' military, North Korea's is still one of the largest in the world, with 1.2 million active service members, nuclear weapons, and tens of thousand of artillery at its disposal. "If Kim Jong Un said he would hit Anchorage, would he say, go ahead hit Anchorage and see what happens?", Underwood said.
"China should also make it clear that if North Korea launches missiles that threaten US soil first and the US retaliates, China will stay neutral", it added.
Surprise ! La Corée du Nord surenchérit après les menaces de Trump
En effet, Pyongyang a menacé mercredi d'attaque l'île de Guam , un bout de terre américaine au beau milieu de l'océan Pacifique. Le président chinois Xi Jinping en a directement fait part à Donald Trump dans un entretien téléphonique samedi.
Asked about his "locked and loaded" tweet on Friday, Mr Trump told reporters: "I hope that they [North Korea] are going to fully understand the gravity of what I said, and what I said is what I mean... those words are very, very easy to understand".
The barbs have raised fears of a miscalculation that could lead to catastrophic consequences on the Korean Peninsula and beyond.
Despite the tough rhetoric, Mr Trump has insisted that "nobody loves a peaceful solution better than President Trump".
Speaking to the President on the phone, the Chinese politician allegedly urged for restraint on all sides.
Citing new analysis, completed last month by the U.S. Defense Intelligence Agency, the Washington Post reported North Korea also has up to 60 nuclear warheads. "That is a statement of fact". There's no information coming out of there except for the leader's statements. It's a statement, has nothing to do with dare.
Its creator Alex Wellerstein Tweeted about the sudden surge in activity on the site this week.
In July, North Korea claimed to have test-fired two intercontinental ballistic missiles (ICBM). Pyongyang says it will be ready to send its missile launch plan to Kim for approval just before or as the drills begin.