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Seoul seeks strong response to North Korea’s sixth nuclear test

South Korean President Moon Jae-in, left, arrives to presides over a meeting of the National Security Council at the presidential Blue House in Seoul, South Korea, Sunday, Sept. 3, 2017. North Korea said it set off a hydrogen bomb Sunday in its sixth nuclear test, which judging by the earthquake it set off appeared to be its most powerful explosion yet. (Yonhap via AP)
South Korean President Moon Jae-in, left, arrives to presides over a meeting of the National Security Council at the presidential Blue House in Seoul, South Korea, Sunday, Sept. 3, 2017. North Korea said it set off a hydrogen bomb Sunday in its sixth nuclear test, which judging by the earthquake it set off appeared to be its most powerful explosion yet. (Yonhap via AP) South Korean President Moon Jae-in, left, arrives to presides over a meeting of the National Security Council at the presidential Blue House in Seoul, South Korea, Sunday, Sept. 3, 2017. North Korea said it set off a hydrogen bomb Sunday in its sixth nuclear test, which judging by the earthquake it set off appeared to be its most powerful explosion yet. (Yonhap via AP)

SEOUL, South Korea (AP) – South Korea says it wants to answer North Korea’s sixth nuclear test with the strongest measures possible.

South Korea’s National Security Director Chung Eui-yong said Sunday that President Moon Jae-in will seek every available diplomatic measure, including new sanctions from the United Nations Security Council. He says Moon will also discuss with Washington ways to deploy the “strongest strategic assets” the U.S. has to completely isolate Pyongyang.

The president’s office would not comment on it means by “strongest strategic assets.”

The response comes in the wake of the North’s confirmation that it has successfully tested a hydrogen bomb of “unprecedented” strength meant to be loaded into an intercontinental ballistic missile. The nuclear test triggered a strong earthquake.