So said President Donald J. Trump a little over a week ago about North Korean dictator Kim Jong Un.
Trump has said "a major, major conflict" with North Korea was possible and all options were on the table but wanted to resolve the crisis diplomatically and peacefully, possibly through the use of economic sanctions.
President Moon Jae-in took office last week with pledges to seek a dual-track approach to push for North Korea's denuclearization and dialogue with it.
U.S. Disarmament Ambassador Wood said China was key given that 90 percent of North Korea's trade was with that country.
South Korean Ambassador Cho said it is "deeply regrettable" that North Korea launched a ballistic missile "only a few days after the inauguration of our new government in Seoul".
Yoon said Chung and Pottinger in their meeting reaffirmed that Seoul and Washington share a common goal in the "complete discarding" of North Korean nuclear weapons and will pursue "all methods, including sanctions and dialogue" to reach the goal.
"The US isn't past looking at third-party countries who are supporting North Korea and putting sanctions on them", Haley said.
"North Korea seems to be very aware of the U.S. attack on Syria", said Jiro Ishimaru, North Korea expert at the publication.More news: All eyes on Trump at North Atlantic Treaty Organisation summit
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A week ago, the North test-fired what is believed to be an intermediate-range ballistic missile from Kusong, North Pyongan Province.
South Korea and the US are now building a data-link system to share information gathered by the USA -controlled THAAD radar and the Green Pine missile defense radar operated by the South Korean military.
Haley said the US was still working on persuading China and Russian Federation to support stronger sanctions against North Korea, to which end she "pointedly reminded Russian Federation that the North's latest missile test had reached close to Russia's border", as the New York Times puts it.
Another carrier, the Ronald Reagan, left Yokosuka in Japan yesterday on its regular spring patrol, which would last three to four months, a spokesman for the U.S. Seventh Fleet said.
U.S. Ambassador to the United Nations Nikki Haley put the American position in forceful terms on Tuesday: "We have to turn around and tell the entire global community: You either support North Korea or you support us".
China's Foreign Ministry, in a later statement on its website, said Wang "fully explained" China's position on THAAD and asked South Korea to handle China's reasonable concerns appropriately.
Ahead of an emergency meeting by the UN Security Council in NY on Tuesday, U.S. ambassador to the UN Nikki Haley hinted that the U.S. would be pushing for new sanctions against North Korea, and that the U.S. planned to "call out" and sanction nations which continued to support the DPRK.
"Combining nuclear warheads with ballistic technology in the hands of a volatile leader like Kim Jong-un is a recipe for a disaster", AP cited Harris as saying.