Speaking in California later Thursday, Mattis praised the diplomatic leadership of Tillerson and U.S. Ambassador to the UN Nikki Haley, as well as a unanimous vote by the UN Security Council to impose fresh sanctions on North Korea.
"On the situation on the Korean peninsula obviously the Secretary General remains extremely concerned by the ongoing situation; he's troubled by the increase in confrontational rhetoric that we've seen", a spokesman for Guterres said.
President Donald Trump says he's planning to add billions of dollars to the nation's anti-missile programs.
Even as President Donald Trump says the United States military is "locked and loaded" to potentially unleash "fire and fury" on North Korea, the two feuding countries have been holding secretive, back-channel talks, The Associated Press reported Friday. The escalation between the United States and North Korea has prompted the bookie to serve up a menu of North Korea specials for its punters.
In a diplomatic win for the USA, the measures were approved unanimously - including by Russian Federation and China, the North's sole major ally, according to AFP.
Jonathan Pollack, a senior fellow at the Brookings Institution specializing in Asia-Pacific security issues, says the US day-to-day military capabilities in the western Pacific are "very imposing, very impressive".
"China should make clear that if North Korea launches missiles that threaten US territories and triggers USA retaliations, China will stay neutral". Trump is issuing a new warning over the North's development of nuclear weapons.
"The president was addressing reporters during his vacation at his New Jersey golf club before a security briefing with top advisers". During brief remarks to reporters on Tuesday, the president threatened nuclear strikes against the regime of Kim Jong-un if it issues threats against the United States, saying the military will retaliate with "fire and fury like the world has never seen".
"North Korea has said it may attack Guam in retaliation".
And U.S. Defense Secretary James Mattis on Thursday appeared to downplay the possibility of armed conflict.
There are about 29,000 American troops permanently stationed in South Korea. Japan said Thursday it could shoot down missiles for its US ally if North Korea fires them at Guam.