North Korea conducted its largest single missiles test on Sunday.

South Korea’s Joint Chiefs of Staff said that at least eight missiles were fired from the Sunan area of the North Korean capital Pyongyang and they flow between 110 km-600 km that is 70-370 miles at altitudes between 25 km to 90 km.

In response, South Korea President Yoon Suk-yeol convened a National Security Council meeting and ordered “expanded deterrence of South Korea and the United States and continued reinforcement of united defence posture”.

The NSC meeting conclued that the missile launch was North Korea’s “test and challenge” of the security readiness of South Korea’s new administration, which took office last month, the president’s office said in a news release.

South Korea’s Ministry of Foreign Affairs said Kim Gunn, its Special Representative for Korean Peninsula Peace and Security Affairs, discussed the provocation with U.S. Special Representative Sung Kim, the U.S. point man on North Korean affairs. Kim Gunn also held a telephone conference with his Japanese counterpart Funakoshi Takehiro.

Japanese Defence Minister Nobuo Kishi said the North had launched multiple missiles, and that the act “cannot be tolerated.” He said at a briefing that at least one missile had a variable trajectory, which indicates it could manoeuvre to evade missile defences.

The U.S. Indo-Pacific Command said in a statement that North Korea’s multiple ballistic missile launches highlighted the destabilising impact of its illicit weapons program but that the event didn’t pose an immediate threat.