Asked about whether the latest round of sanctions against Pyongyang will have the desired effect, given North Korea's race toward nuclear development and the time it takes for sanctions to kick in, Tillerson said that "when do these actually have a practical bite on their revenues. the more important element of that is just the message that this sends to North Korea of how unacceptable the entire worldwide community finds what they're doing to be".
Earlier, U.S. Secretary of State Rex Tillerson said new United Nations sanctions targeting North Korea are a "very good outcome".
The U.S. -drafted measure, negotiated with North Korea's neighbor and ally China, is aimed at increasing economic pressure on Pyongyang to return to negotiations on its nuclear and missile programs.
"The fundamental reason for THAAD deployment is for our national interest and for the sake of our national security", Tang said, referring to Seoul's Terminal High Altitude Area Defense supplied by the U.S.
Indeed, North Korea reportedly requested bilateral talks with several countries during the forum, but Foreign Minister Ri Yong-ho was met only by the foreign minister of chair country the Philippines after the ASEAN member countries made a decision to avoid individual contact.
There was no direct reaction from North Korea to the remarks but in a statement after the USA secretary of state made his comments, Pyongyang responded robustly to the new sanctions by saying it would exact "thousands-fold revenge" on America.
China voted in favor of the sanctions despite being North Korea's largest trading partner.
The Council voted unanimously on August 5 to impose new sanctions on Pyongyang, targeting exports such as coal, iron, lead, and seafood among others.
Speaking in NY after the Security Council adopted the new resolution Saturday, U.S. Ambassador to the U.N. Nikki Haley stressed that the joint drills would not stop.
Though Tillerson has emphasized the Trump administration's willingness to sit down with North Korea for negotiations, he's said that won't happen until the North agrees to abandon its nuclear aspirations. The 28 members include 10 ASEAN member states.
But ASEAN's statement on North Korea stopped short of endorsing calls that Pyongyang be suspended from the ARF, as officials at the U.S. State Department had suggested this past week.
Tillerson said Washington would not "specify a specific number of days or weeks" before deciding that North Korea had indeed stopped its tests. "Though at the same time he'll be the main focus of the press who will hang on his every word to determine North Korea's future plans for its nuclear and missile development as well as Kim Jong-un's policy directions".
Yet despite deeming North Korea a top security threat, the young Trump administration has struggled to find a strategy that differs significantly from what the USA has tried in the past. Kang is thanking the US for consulting with South Korea on the sanctions.
But Wang, the Chinese envoy, cast Ri's presence in Manila as a positive, enabling him to "hear the voices from other sides".