The launch event came as U.S. Secretary of State Antony Blinken was visiting Seoul for talks with South Korean allies over the North Korean nuclear threat and other issues.
North Korea's state-run Korean Central News Agency claimed a successful test of a new type of intermediate-range hypersonic ballistic missile.
The JCS said the South Korean military has heightened surveillance for additional launches and maintaining a readiness posture to share info with the U.S. and Japan.
The U.S. secretary of state aimed to show that his country stood by South Korea as it grapples with a political crisis, and as Donald J. Trump returns to power.
North Korea has fired what appears to be an intermediate range ballistic missile towards the sea to its east, South Korea's military said, in what is Pyongyang's first missile launch in two months. Japan's defence ministry said around noon local time (03:00 GMT) that the projectile had already fallen into the sea.
North Korea said Tuesday it successfully test-fired a new intermediate-range hypersonic ballistic missile, claiming the weapon would "reliably contain any rivals in the Pacific region."
Kim Jong Un described the missile test as a crucial achievement in his goals to bolster North Korea's nuclear deterrence. Lee Sung Joon, Spokesperson of South Korean Joint Chiefs of Staff, downplayed the test,
North Korea launched an intermediate-range ballistic missile into the East Sea on Monday, South Korea's military said, as U.S. Secretary of State Antony Blinken arrived in Seoul amid a political crisis in the country.
North Korea launched its first missile test since Election Day on Monday, strongly implying that it does not plan to play nice with President-elect Trump.
Russia may be close to sharing advanced satellite technology with North Korea after the isolated nation supplied troops to help bolster Moscow’s war in Ukraine, United States Secretary of State Antony Blinken warned Monday.