"At the end of the day if the North Koreans evolve into a fully replete nuclear weapons state with ICBMs (intercontinental ballistic missiles) with miniaturised warheads on top then, well, the Chinese view is, the U.S. will then just have to accept that reality", Mr Rudd said. "The risks of an unintended escalation into full-blown conflict are too great for the whole world".
He said: "Our government must not drag our country into any military action over the Korea crisis, including joint exercises".
After Trump vowed on Tuesday to treat North Korean threats of hostility with "fire and fury like the world has never seen", the Kim regime announced that it is planning to launch four intermediate-range ballistic missiles into the Pacific Ocean near Guam, a USA territory.
"We can not play fast and loose with nuclear weapons and nuclear threats".
Trump doubled down Thursday, saying his previous bold statements might not have been "strong enough" for Kim Jong Un, whose regime announced a plan to fire four missiles near the USA island territory of Guam in response to the White House's bold rhetoric.
Clapper said the USA and North Korea could "blunder" into global military conflict as they exchange escalating hostilities.
President Trump over the past week has intensified his rhetoric against North Korea.
On Thursday, Kim Jong-un threatened to strike waters around the United States base in Guam. "If he utters one threat in the form of an overt threat. or if he does anything with respect to Guam, or any place else that is an American territory or an America ally, he will truly regret it and he will regret it fast".