North Korea launched a ballistic missile into the East Sea today (1st), the Joint Chiefs of Staff said.



The fourth ballistic missile launch in the last week from the 25th of last month seems to have led to an armed demonstration in protest against the South Korea-U.S.-Japan anti-submarine warfare exercise.



South Korea, the United States and Japan conducted a joint exercise yesterday assuming a situation in which North Korean submarines equipped with submarine-launched ballistic missiles were tracked and detected in the high seas east of Dokdo.