Earlier in NY, the Security Council adopted Resolution 2375 that centers on putting caps on North Korea's imports of crude and refined petroleum products, which experts say will lead to around a 30 percent reduction in total supplies of oil-related products to the North.
The resolution fell short of measures sought by the Trump administration.
She added: "We are not looking for war".
"These new sanctions send a loud and clear message to North Korea that its behaviour will not be tolerated by the worldwide community and will be met with significant consequences", he said. "The choice is theirs".
The U.N. Security Council has unanimously approved new sanctions on North Korea in a watered-down resolution without an oil import ban or global asset freeze on the government and leader Kim Jong Un that the Trump administration wanted.
The proposed resolution would slap a ban on textile exports from North Korea, but drop demands for a full halt to payments of North Korea laborers working overseas.
The council imposed a US-drafted ban on the country's textile exports as well as capping imports of crude oil - but was forced to water down an initial tougher bill which called for a total oil ban for the state.
The resolution also reportedly gives countries the right to freeze assets of cargo ships if their operators refuse to comply with to inspections on the high seas. The names of a few North Korean officials have also been added to UN's blacklist, which results in the freezing of their assets overseas and a worldwide travel ban.
The council last month adopted a sanctions resolution imposing a full ban on exports of coal, seafood from North Korea after it carried out an ICBM test.
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Japan's Prime Minister Shinzo Abe said the sanctions were much stronger than earlier measures and urged Pyongyang to take "concrete action" toward denuclearization.
The sanctions were watered down from what the US had sought, after negotiations with China.
China, the North's main ally and key energy supplier, and Russian Federation have not clearly said whether they would support the new raft of sanctions. The sanctions also place a cap on crude oil exports to the communist regime at current levels.
That would amount to a 10 percent cut in oil products, according to the US Energy Information Administration (EIA), which estimates annual exports to North Korea at almost 2.2 million barrels.
But analysts were sceptical about their impact.
"However, it's just as well that the worldwide community adopted this sanctions resolution by consensus", he said.
Ms Haley insisted the United States has no desire to overthrow the country - but compared the threat from North Korea's nuclear ambitions to the September 11 attacks of 16 years ago. "The forthcoming measures to be taken by the DPRK will cause the U.S. the greatest pain and suffering it had ever gone through in its entire history", the statement added.
Pyongyang has staged a series of missile tests in recent months, culminating in an intercontinental ballistic missile that appeared to bring much of the USA mainland into range - ramping up tensions and earning itself a seventh set of UN Security Council sanctions.