"It's now incumbent on the United States to either try to fix this, fix the superficial progress that had been made between Japan and South Korea that enabled the GSOMIA to get signed, or to be willing to continue serving as the hub", she said.
The dispute between the two USA allies has raised concerns over the potential implications for their security cooperation in the face of North Korean missile tests, and the possible impact on global supply chains.
"Given such circumstances, our government has decided that maintaining this agreement set for the sake of exchanging sensitive military information does not fit our national interest", Kim told a news conference. It's not clear what the immediate impact of its termination will be. He said such sharing was important from a military standpoint, and discussions were ongoing outside the military. "We strongly believe that the integrity of our mutual defense and security ties must persist despite frictions in other areas".
However, US President Donald Trump expressed that he was not anxious as the North Korean leader has kept his pledge not to detonate nuclear bombs or test larger missiles that could deliver them to the US mainland.
The South Korean decision will also further aggravate its ties with Japan, which are already at their lowest point since the two countries established diplomatic ties in 1965.
Biegun said that Trump assigned his team to restart working-level talks with North Korea, in line with what Trump and Kim agreed during their third summit in late June. It called the South Korean-U.S. alliance "powerful".
Mr Trump has said he does not think tests of short-range missiles should jeopardise the talks the leaders began in Singapore past year, but North Korea has hinted at the possibility of more significant provocations.
"My impression was that North Korea and the United States would carry out dialogue soon, and it would go well", Kim told reporters after the one-hour meeting, without elaborating.
"It damages the national security of all three countries though South Korea suffers the worst", he said. It will compel Japan to strengthen Japan-U.S. relations as well as relations with Australia, India and other partners. The pact will expire November 23 if not renewed.
Seoul also recently argued that restrictions Japan imposed on trade with South Korea have drastically changed the security environment. Japan says it is a security issue.
"Seoul's decision to end the GSOMIA agreement serves no goal except to win political points for the Moon administration", Nagy said. He nevertheless played down its practical importance, telling the committee the pact was more about relationships than utility. Some argued that South Korea should do whatever it could to inflict pain on Japan, and that just floating the idea of ending the intelligence deal could force the United States to persuade Japan to lift its trade curbs.
The U.S. expressed disappointment in the decision.