U.S. Secretary of Defense James Mattis has insisted that diplomatic efforts to contain the threat posed by North Korea are working, and remain the favored means for solving the crisis.
He said that the U.S.is dealing with the North Korean threat with an effective diplomatic effort.
It says North Korea will complete a plan by mid-August for the "historic enveloping fire at Guam", convey it to the commander in chief of its nuclear force and then "wait for his order".
"The tragedy of war is well enough known", Mattis said, responding to a question about the human toll of a nuclear confrontation between the DPRK and the U.S.
Secretary of State Rex Tillerson told reporters on Wednesday that Americans had "nothing to fear" from Trump's remarks, and that they had instead been an attempt to use language that Kim Jong Un "would understand".
North Korea Gen. Kim Rak Gyom said Trump is "extremely getting on the nerves" of his soldiers by making comments that showed his "senility" again.
A number of US allies, including Australia and Japan, have said that they're prepared to stand with Trump and will take military action against North Korea if Jong Un launches an attack against Guam, according to Fox News. "The Secretary General welcomes all initiatives that will help deescalate tensions and welcomes a return to diplomacy". But he says that, until that happens, the U.S.
On Thursday, U.S. and Japanese troops began an 18-day live fire exercise on the northern Japanese island of Hokkaido, which was to include rocket artillery drills and involve 3,500 troops.
Tensions have escalated rapidly in recent weeks after North Korea tested two intercontinental ballistic missiles in July.
"China should make clear that if North Korea launches missiles that threaten USA territories and triggers US retaliations, China will stay neutral".
In a lengthy exchange with reporters at his Bedminster golf resort, he said past administrations had not done enough to take on North Korea and that it was time a president "stuck up for the country".