North Korea launched multiple short-range ballistic missiles from the Wonsan area on North Korea’s east coast on September 12. The South Korean military detected the projectiles at around 5:20 a.m. KST Saturday.
Early Morning Missile Barrage off the East Coast
They traveled about 250 kilometers before landing in the ocean to the east of North Korea. This latest display continues an aggressive testing cadence by Pyongyang.
Joint Firepower Drills Involve Drones and Rockets
State-controlled media painted a detailed picture of the operation soon after. According to the Korean Central News Agency, the event functioned as a joint firepower attack drill involving subunits from five artillery and missile joint units of the Korean People’s Army.

Attack drones, a tactical cruise missile, a tactical ballistic missile, and a large-caliber thermal-pressure multiple rocket launcher were all featured in the exercise.
Director of the Artillery Bureau Yu Chang Son stated via state media that the training was designed to get familiar with the procedure for the operation of the integrated firepower control system and increase the efficiency of destroying the targets with concentrated fire.
Shadow of Trilateral Freedom Edge Exercises
The military activity occurred just a day after South Korea, the United States, and Japan wrapped up Freedom Edge. That five-day trilateral exercise ran from September 7 to September 11.

The operation aimed to strengthen air, maritime, and cyber coordination against North Korean nuclear and missile threats. North Korea has previously cast both trilateral and South Korea-U.S. drills as provocations.
The launch on September 12 follows a familiar pattern where Pyongyang responds to major allied military drills with missile tests almost as soon as they wrap up.
Washington Pursues New Summit While Pyongyang Stays Silent
The latest launch intersects with ongoing diplomatic overtures from the United States. U.S. President Donald Trump has continued to seek a new summit with North Korean leader Kim Jong Un, attempting to revive personal diplomacy from his first term.
Aides have reportedly weighed a rendezvous around the Asia-Pacific Economic Cooperation summit in Shenzhen, China, in November, though no formal arrangements have begun.
Pyongyang has maintained distance from these latest overtures. Kim did not mention Trump’s outreach during a Workers’ Party political bureau meeting in late August, even as he called for “extraordinary responsibility” in carrying out state projects.
An Established Cycle of Testing and Defense Talks
The September launch sequence followed an earlier barrage of short-range ballistic missiles on August 20. That event occurred hours after Trump said he intended to meet Kim later this year.
Meanwhile, South Korea and the United States prepared for further defense coordination, scheduling their 29th Korea-U.S. Integrated Defense Dialogue in Busan.