She acknowledged that it was no easy feat, but remained confident that China - North Korea's central trading partner - would fulfil its obligations and ensure the sanctions decree is upheld.
In a statement carried by state media on August 7, the North Korean government said the sanctions were a "violent infringement of its sovereignty" that was caused by a "heinous US plot to isolate and stifle" North Korea.
North Korea has also threatened that it would carry out a nuclear strike "at the heart of the United States" if the USA attempts a regime change in Pyongyang, after recent hints to that end by CIA Director Mike Pompeo.
North Korea's foreign minister Ri Yong Ho said Seoul's proposals lack sincerity when South Korea is imposing sanctions on the North with the United States, the official added.
The Trump administration has pursued what it calls a pressure campaign against North Korea, isolating it economically and diplomatically to force it to surrender its nuclear weapons and ballistic missile programs.
"Sanctions are necessary but in no way the ultimate goal", China's Foreign Minister Wang Yi said Monday at the Association of Southeast Asian Nations Summit, the conference in Manila. They said they were committed to providing help in implementing them.
"The best signal that North Korea could send that they're prepared to talk would be to stop these missile launches", Tillerson told reporters.More news: Galaxy S8 Active Official: $100 more than the Galaxy S8?
It also comes after Secretary of State Rex Tillerson suggested the U.S. would be open to talks with Kim provided he halted his missile program.
Pyongyang test-launched two intercontinental balistic missiles last month as part of its efforts to acquire a long-range missile capable of striking anywhere in the mainland United States. North Korea's Rodong Sinmun news website published a commentary dismissing the sanctions as "cooked up by the US", adding that "the USA mainland is on the crossroads of life and death".
At the end of July, North Korea test-fired an improved intercontinental ballistic missile (ICBM), a Hwasong-14, that could strike the U.S. mainland, purportedly, as far east as Chicago.
"The United Nations Security Council Resolution 2371 was created under forceful USA demand, and violates the right of self-determination, right to existence".
During the 50th ASEAN Foreign Ministers' Meeting in Manila over the weekend, Chinese Foreign Minister Wang Yi gave 2 conditions so talks on the sea code could begin. It also concludes that the possibility that North Korea can miniaturize nuclear weapons into warheads is conceivable.
The contending states should clarify their claims peacefully in accordance with a 1982 maritime treaty and global law, according to the three, who met on the sidelines of annual meetings of Asia-Pacific foreign ministers in Manila, including those from China and Russian Federation. Even if the figures on coal imports are accurate, they do not appear to have negatively affected the booming China-North Korea trade overall - despite frequent warnings from the Trump administration.
South Korea, the USA and Japan hailed the adoption of new sanctions. Town added that China has a poor record of complying with United Nations sanctions on North Korea, and called it "wishful thinking" to believe that would change now.