The resolution - in the wake of Pyongyang's sixth and strongest nuclear test explosion - bans North Korea from importing all natural gas liquids and condensates.
A USA official, familiar with the council negotiations and speaking on condition of anonymity, said North Korea imports 4.5 million barrels of refined petroleum products annually and 4 million barrels of crude oil.
"We will never forget the lesson that those who have evil intentions must be confronted.""We are done trying to prod the regime to do the right thing" and now are instead taking steps to prevent it "from doing the wrong thing".
The spokesperson delivered these comments shortly before the United Nations was to voted on the United States' proposed resolution of more sanctions on the North Korean government. "If it proves it can live in peace, the world will live in peace with it", she told the United Nations security council after the council adopted the new sanctions.
Pyongyang rejected a UN Security Council resolution to slap sanctions on North Korea following its sixth nuclear test and ramped up tensions with its latest threat sparking fears World War 3 could break out.
China, North Korea's sole ally and main trading partner, had strongly objected to an oil embargo initially sought by the U.S. out of fear that it would bring the North's economy to its knees.
Haley acknowledged China's influence saying: "Today's resolution would not have happened without the strong relationship that has developed between President (Donald) Trump and Chinese President Xi (Jinping), and we greatly appreciate both teams working with us".
Finding and employing incentives for Kim to behave reasonably is very much in the shared interests of the U.S., China, Japan and South Korea. Pyongyang claims it tested a hydrogen bomb capable of sitting atop a ballistic missile. Almost 80 percent of the textile exports went to China.
"If North Korea continues its unsafe path, we will continue with further pressure".
Textiles were North Korea's second-biggest export after coal and other minerals in 2016, totaling $752m, according to data from the Korea Trade-Investment Promotion Agency.
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US Permanent Representative Nikki Haley, who proposed a virtual blockade of North Korea but agreed to the watered-down version after negotiations with China and Russian Federation, after the vote said that over 90 per cent of North Korea's exports were now banned when combined with earlier sanctions on iron ore, metals, seafood and coal exports.
Even with US military support behind South Korea, a quick strike by the North Koreans across the 38th parallel border set between the two nations after the Korean War would be a humanitarian disaster.
Images released by the North Korean regime show Kim Jong-un feting nuclear scientists and military officials at a celebration banquet on Saturday, September 9, 2017.
Joint ventures will be banned and the names of senior North Korean official and three entities were added to a United Nations sanctions blacklist that provides for an assets freeze and a global travel ban.
"I do believe that whatever makes it into the final text and is adopted by consensus hopefully will have significant consequences on the economic pressure against North Korea".
"The textile sanctions actually might have more impact, as they are probably a good source of value-added income - value added by people you don't have to pay much - for the regime", he said. Washington wants the Security Council to vote tomorrow to impose the sanctions, despite resistance from Beijing and Moscow to the new measures.
Reaction in Asia to the latest round of global sanctions imposed on North Korea has been positive, but many are still skeptical they will have any significant impact. They say usually negotiators take time quietly behind the scenes to come up with these new sanctions.
Aside from Baranov's ferry, and the occasional Air Koryo flight to Pyongyang, the only other link between the two countries is an irregular train which runs from Pyongyang to the town of Khasan, 76 miles (120 km) south of Vladivostok on the Tumen River near the border with North Korea. They have proposed a freeze-for-freeze that would halt North Korean nuclear and missile tests in exchange for the USA and South Korea stopping their joint military exercises - but the Trump administration has rejected that. He urged Pyongyang to take "concrete action" toward denuclearization.
A Security Council resolution needs nine votes in favor and no vetoes by permanent members the United States, Britain, France, Russia or China to pass.