Top Trump administration officials are set to hold a rare briefing at the White House for the entire US Senate on the situation in North Korea, senior Senate aides say.
The senators will be briefed by Secretary of State Rex Tillerson, Defense Secretary James Mattis, National Intelligence Director Dan Coats, and Joint Chiefs Chairman Gen. Joseph Dunford.
Washington hopes to pressure Pyongyang into dismantling its nuclear and ballistic missile programmes through tightened sanctions and bring it back to the "path of dialogue", according to an administration statement after the briefing.
Along with sending USA military assets to the region in a show of force, President Donald Trump is leaning on China to exert economic pressure on North Korea.
The U.S. military started moving parts of the controversial THAAD anti-missile defence system to a deployment site in South Korea on Wednesday amid high tensions over North Korea's missile and nuclear programmes.
Trump said the Security Council must be prepared to impose additional and stronger sanctions on North Korea's nuclear and ballistic missile programs. Instead, they've said the administration's strategy focuses on increasing pressure on North Korea with the help of its main trading partner, China.More news: New report shows cases of drugged driving surpass drunk driving
Spicer argued that Flynn filled out that form during the Obama administration, and brushed aside questions about the White House refusing the committee's request for any documents "referring or relating to Lieutenant General Flynn's contacts with foreign nationals".
A separate briefing is in the works for members of the House, Reuters reported.
At the same time, they differed on partisan lines on the context and importance of the briefing. President Donald Trump also dropped in on the meeting.
In addition to sharing a border with South Korea, the Democratic People's Republic of Korea has a 17-km land border and a 22-km maritime border with Russian Federation.
US State Department spokesman Mark Toner said another means of diplomatic pressure would be for nations to close North Korean missions and to ostracize North Korea in global organizations.
Former White House press secretary Josh Earnest is speaking for the first time about how his successor Sean Spicer is doing.More news: Customers have mixed emotions about McDonalds new employee uniforms
Harris said the carrier was in the Philippine Sea, within two hours' striking distance of North Korea if need be.
"Today's briefing signals President Trump's willingness to engage and inform both Republicans and Democrats in Congress of the increasing risk posed by North Korea".
However, the statement warned that the U.S. was "prepared to defend ourselves and our allies". The Trump administration may undertake trade actions to protect the USA semiconductor, shipbuilding and aluminum industries, citing national security concerns, Commerce Secretary Wilbur Ross tells the Wall Street Journal. It said that Seoul and Washington have been pushing to get THAAD quickly working to cope with North Korea's advancing nuclear and missile threats.
Pyongyang says its missile and nuclear programs act as deterrence against a possible invasion by its adversaries, particularly the US.
"Having dealt with the North Korean nuclear issues for more than 20 years, it's extremely hard for anyone to come up with an entirely new yet sound approach at this point", an official at Seoul's Foreign Ministry said on customary condition of anonymity.
"If you just look at the images, right, of the big parade there recently and look at the complexity of that equipment, those components, even the tires, right, are not made in North Korea.More news: Industry Cheers Perdue's Confirmation as USDA Secretary
That's why we called for a protest at 2:00 on Wednesday at the White House, so senators can see people outside saying "No" to war with North Korea", Griffin added.