"Kim Jong Un is not afraid to fail in public, and every test he makes is a success because it takes North Korea one step closer to being able to deliver a nuclear-tipped missile anywhere in the world", he said.
Trump and new South Korean President Moon Jae-in will meet in Washington next month, with North Korea expected to be high on the agenda, the South's presidential Blue House said.
A top US Navy commander on Wednesday pushed for a "sense of urgency" over North Korea's nuclear and missile development, stressing it even threatens Pyongyang's allies China and Russian Federation.
Speaking to reporters ahead of the Security Council meeting, Nikki Haley, Washington's envoy to the United Nations, said that the U.S. would only talk to North Korea once it halted its nuclear programme. Hong said he would discuss North Korea with high-ranking officials in Washington.
In all, six sets of sanctions have been imposed on North Korea since it first tested an atomic device in 2006. A rap group backed by China's government is warning South Korea in a music video that "you're going too far" with the deployment of a USA missile defense system, as Beijing seeks to bring its state-supported cultural forces to bear in the global dispute.
In order to ensure that such weapons are not used for pre-emptive strikes, which are banned by the country's Constitution, however, it is necessary for Japan to be able to detect and confirm an enemy intention to launch an armed attack - something it can not manage without information from the USA military.
US Ambassador to the UN Nikki Haley pledged Tuesday that the US plans to "tighten the screws" on North Korea's nuclear ambitions.
The US ambassador to the United Nations urged other countries to do more to pressure North Korea over its weapons program, saying "You either support North Korea or you support us, you are either with North Korea or not".
The US said on Tuesday it believed it could persuade China to impose new sanctions on North Korea and warned that it would also target and "call out" countries supporting Pyongyang.More news: Zacks Investment Research Upgrades Eli Lilly and Co (LLY) to Buy
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In Seoul, visiting US National Security Council's senior director for East Asia Matt Pottinger said the conditions are not right for dialogue.
US experts said Sunday's launch was likely a mobile, two-stage, liquid-fueled missile that North Korea displayed in a huge April 15 military parade.
The statement came a day after North Korea tested what appeared to be its longest-range missile yet.
China has strongly opposed THAAD.
Haley spoke positively when asked whether China would support the Security Council's aims to strengthen and extend sanctions aimed to hit North Korea.
A secret SDF simulation showed that, in the event of such an attack, the radars of the Maritime Self-Defense Force vessel equipped with the Aegis missile defense system would focus on tracking the first missile launched.
In a statement on Monday, the 15-member council demanded that Pyongyang conduct no further ballistic missile tests. "Ninety percent of the DPRK's trade is with China, so clearly there is a lot more leverage that China has, and we would like China to use".
The minister added that Seoul could carry out an preemptive strike on North Korea if there were clear signs the North was ready to attack the country.