Speaking to reporters alongside USA ambassador to the UN Nikki Haley at a press conference in the White House, McMaster, the nation's top security chief, said the USA was running out of options on North Korea.
McMaster's comments come a day after the Kim Jong-un regime fired a ballistic missile over Japan.
"I have no problem kicking it to General Mattis", Haley said at a White House press conference, explaining that despite diplomatic efforts and strong United Nations sanctions, the North Koreans "continue to be provocative".
President Donald Trump's national security adviser says the US has a military option for North Korea, but that is not its preferred route.
Trump and first lady Melania Trump met with military families and watched an air show demonstration at the base that serves as the home of Air Force One, the presidential plane.
North Korea, according to McMaster, is "one of the world's most urgent and unsafe security problems". He calls on all nations to enforce them and do everything they can to address the threat and prevent war.
In her opening remarks, Haley made sure to savage North Korea for its repeated nuclear and ICBM missile tests. She said they were continuing to work on reform at the United Nations and said that finally the body is taking action on certain issues. "As Ambassador Haley said before, we've been kicking the can down the road and we're out of road".
The UN Security Council held an emergency meeting on Friday in NY to discuss the crisis, though no further sanctions were expected to be agreed. "... I have no trouble kicking it to [Defense Secretary] Gen. [Jim] Mattis, because I think he has plenty of options".
The last set of sanctions included restrictions on North Korea's oil imports and a ban on its textile exports.
Such is the respect his peers have for the 35 year old's power. "I'm a counter puncher, and I like to fight". One of the more underrated athletes in the sport, he is a ring general and the best at cutting the ring .
Mr Trump also complimented Florida Governor Rick Scott's response to the crisis, and said he should run for the U.S. senate. Trump went on to call the hurricane an unparalleled disaster, "the likes of which nobody has ever seen before".
Windsor met Thea Spyer , at the time already a clinical psychologist, at Greenwich Village restaurant Portofino in 1963. The marriage was over within a year, and Windsor moved to NY and eventually became immersed in the gay community.
The administration also faces an October 15 deadline to certify whether Iran remains in compliance with the nuclear deal. The three-month recertification deadlines determine the status of sanction relief under the agreement.
The unidentified man is said to have rushed at a patrol of soldiers wearing combat uniforms and brandishing assault rifles. Police said that a knife-wielding assailant tried to attack a soldier but was quickly arrested and no one was hurt.
Pep Guardiola's side empathically opened their Champions League campaign with a huge win over Dutch champions Feyenoord . Feyenoord will be without Nicolai Jørgensen when they take on Manchester City in their Champions League opener.
He also said an extension to the cartel's cuts was possible since volumes of oil stocks were still a challenge. In August, OPEC's total crude oil production eased by 79,000 b/d, to average nearly 32.8 million b/d.
Renault-Nissan is aiming for 14 million vehicles sold in 2022
Moreover, it will roll out 12 new pure electric vehicles by 2022 with 30 per cent decrease in battery cost from 2016 to 2022. However, it did specify that it will launch four shared platforms with the aim of producing over 9 million vehicles on them.
Israel endorses independent Kurdish state
Israel's leader on Wednesday said his country supports Kurdish independence ahead of a key referendum on the matter. But the statement said Israel "supports the legitimate efforts of the Kurdish people to attain a state of its own".
Terrorist Abu Ismail Killed by Indian Forces
Meanwhile, 2G and 3G mobile internet services have been restored in Srinagar , whereas 4G services are still blocked in Srinagar . "As the security forces tightened the cordon, the hiding militants opened fire, triggering an encounter", an official said .
Washington school shootout: one student killed
An "active shooter" was arrested last Friday at a school in Columbus, Ohio, although no one was injured in that incident. Senator Maria Cantwell tweeted, "Closely monitoring devastating news of the school shooting in Spokane County".
Trump leaves for storm-ravaged Florida to assess damage
Trump says alongside Scott and other Florida officials that he knows "at a certain point it ends for you and we can't let it end". Trump was to arrive in Fort Myers, where he's scheduled to meet with local officials and receive a briefing on relief efforts.