China announced today that it will limit oil exports to North Korea under United Nations sanctions over its nuclear and missile development, further cutting support from Pyongyang's last major ally and trading partner.
Tensions between the United States and North Korea have ratcheted up after the sixth and most powerful nuclear test conducted by Pyongyang on September 3 prompted the United Nations Security Council to impose further sanctions last week.
It added that China has issued a "comprehensive ban on imported textiles" from North Korea, reiterating another clause of the new sanctions that prohibits trade in both fabric and clothing.
Prior to the briefing, Mnuchin attended a bilateral meeting between Trump and South Korean President Moon Jae-in, in which the two leaders spoke about the North Korea threat.
The head of the nuclear test monitoring agency CTBTO said on Saturday that analysts were "looking at unusual seismic activity of a much smaller magnitude" than the Sept 3 test in North Korea.
The administration said in a statement on its website that the quake, which occurred around 0830 GMT, was recorded a depth of zero kilometres. We can not conclusively confirm at this time the nature (natural or human-made) of the event.
The data comes after the United Nations Security Council unanimously voted on August 6 to impose a ban on exports of coal, iron, iron ore, lead, lead ore and seafood as punishment for intercontinental ballistic missile tests in July.
The majority of North Korea's oil likely comes from China, but the exact tally of oil exports remains unknown, as Beijing has not published such data since 2014.
"US missile defence capability is built to go against North Korea's threat", Hyten said.
U.S. Treasury Secretary Steven Mnuchin said banks doing business in North Korea would not be allowed to also operate in the United States.
On Saturday, China said it had moved to limit North Korea's oil supply and would stop buying textiles from its traditional ally in line with the latest United Nations sanctions.
President Trump and North Korean leader Kim Jong Un spent the past week trading insults and ratcheting up the already-high tension between the countries.