Key Points
North Korea fired two ballistic missiles on September 20, traveling 440 km and 590 km respectively.
Both missiles landed outside Japan's exclusive economic zone in the Sea of Japan.
Japan lodged a formal protest, calling the launches violations of UN Security Council resolutions.
The tests followed Pyongyang's threat to retaliate against U.S.-led military drills near Guam.
North Korea fired two ballistic missiles from its eastern coast on Sunday, September 20, in a show of force that escalated tensions in the region. The first missile traveled approximately 440 kilometers at a maximum altitude of 60 kilometers around 3 p.m. Japan time. The second, launched about three hours later, flew roughly 590 kilometers at 70 kilometers altitude. Both weapons landed in the Sea of Japan outside Japan’s exclusive economic zone, but the launches violated UN Security Council resolutions and prompted swift diplomatic protests from Tokyo and Seoul.
What North Korea launched and where it landed
The first missile fired from near Wonsan on North Korea’s east coast around 3 p.m. Japan time traveled about 440 kilometers before splashing down in the Sea of Japan. The second launch occurred at approximately 5:50 p.m., with the weapon flying over 590 kilometers. Japan’s Defense Ministry confirmed both projectiles fell outside Japan’s exclusive economic zone. The South Korean military assessed the first missile as belonging to the Hwasong-11 series. No damage to vessels or aircraft was reported.
Japan and South Korea condemn the tests
Defense Minister Shinjiro Koizumi condemned the launches, stating that Japan had delivered a formal protest to North Korea through its embassy in Beijing. Koizumi called the ballistic missile launches a violation of UN Security Council resolutions and a serious threat to Japan’s national security. South Korea’s National Security Council also condemned the tests, urging Pyongyang to immediately cease missile activity. The launches marked the ninth and tenth such announcements by Japan’s Defense Ministry this year.
Pattern of escalation follows military drills
This marks North Korea’s second ballistic missile test in roughly a week, following a launch on September 12. North Korea’s Kim Yo Jong, the sister of leader Kim Jong Un, had signaled retaliation on September 17 against recent U.S.-led military exercises called Pacific Vanguard involving Japan, South Korea, and the United States near Guam. Pyongyang accused the Trump administration of maintaining a hostile policy and claimed the drills were destabilizing the region. South Korea and the U.S. are conducting joint analysis of the launches with Japan’s Defense Ministry monitoring the situation closely.
Prime Minister Takaichi orders emergency preparedness measures
Prime Minister Sanae Takaichi issued instructions on September 20 directing government agencies to prepare for unforeseen contingencies in response to the missile launches. The three-step response plan emphasized coordination between defense, foreign affairs, and other ministries. Japan’s Coast Guard confirmed no damage to civilian infrastructure. The Defense Ministry said it would continue analyzing information and remain on alert as the situation develops.
Final Thoughts
North Korea’s two ballistic missile launches on September 20 represent a direct challenge to regional security and international law. With both tests violating UN resolutions and occurring within three hours of each other, the pattern signals deliberate escalation tied to U.S.-led military exercises. Japan and South Korea face continued pressure to strengthen deterrence while monitoring Pyongyang’s next moves.
FAQs
North Korea’s Kim Yo Jong said on September 17 that Pyongyang would retaliate against recent U.S.-led military drills called Pacific Vanguard involving Japan, South Korea, and the United States near Guam, accusing the Trump administration of hostile policy.
The first missile traveled approximately 440 kilometers at a maximum altitude of 60 kilometers. The second flew roughly 590 kilometers at 70 kilometers altitude. Both landed outside Japan’s exclusive economic zone.
Defense Minister Shinjiro Koizumi condemned the launches as violations of UN Security Council resolutions. Japan delivered a formal protest to North Korea through its embassy in Beijing and ordered emergency preparedness measures.
No. North Korea fired ballistic missiles on September 12, also from its eastern coast. The September 20 launches mark the second test in roughly a week and the ninth and tenth such announcements by Japan’s Defense Ministry this year.
Disclaimer:
The content shared by Meyka AI PTY LTD is solely for research and informational purposes. Meyka is not a financial advisory service, and the information provided should not be considered investment or trading advice.
About Author

Huzaifa Zahoor
Co FounderHuzaifa Zahoor is the engineer who built Meyka. He has spent years writing Python, training AI models, and building data pipelines specifically for financial markets. His technical articles have reached over 30,000 readers on Medium, so he knows how to make complex things easy to follow. If this article touches on how the tools work, he is the person who actually built them.
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