"And we work very closely with allies to ensure that this is not unilateral either ... and of course there's a military solution", Mr. Mattis told reporters en route to meet with senior leaders in the technology sector in Seattle and California. "It does not need another characterization beyond the fact that it would be catastrophic".
'Let's see what he does with Guam.
The Kim Jong-Un regime has said it now has the capability of striking the US mainland after two successful intercontinental ballistic missile (ICBM) tests last month.
That impetus has only grown among administration officials amid reports this week that Pyongyang had built a nuclear warhead small enough to fit atop one of the country's long-range missiles.
Trump orders probe of China's intellectual property rules
Officials rebutted suggestions the move was meant to pressure China to do more to rein in North Korea, its main trading partner. But, the official added: "I don't think we're headed toward a period of greater conflict".
Nonetheless, a war of words is being waged between President Donald Trump and Pyongyang.On Aug. 11, Trump affirmed via Twitter that the U.S.is "locked and loaded" for action against North Korea if provoked, saying "military solutions are now fully in place". That's the preferred way to deal with it, ' Turnbull said in a radio interview.
Meanwhile, France is urging all sides "to act responsibly and to de-escalate" tensions over North Korea's nuclear ambitions.
Foreign ministry spokesman Geng Shuang called on both sides to avoid "going down the old path of alternately showing strength and continuously escalating the situation". The aircraft flew over Japanese airspace before passing over the Korean Peninsula.
Pyongyang on Thursday announced it was finalising a plan to fire four missiles near the U.S. territory of Guam.
The Northern Viper drills are one of the scheduled exercises that Japan's Self Defence Forces conducts regularly with their US counterparts and are not a response to the latest tensions. "He would lash out militarily, at a minimum against South Korea", Admiral Stavridis said to NBC. Moon is likely to highlight his policy on North Korea on the holiday, the only one the two Koreas share. But when asked how he would gauge the threat from North Korea, the Secretary said it is "a threat to world peace and global order" and that the human toll from such an attack would be "catastrophic".