About the Authors
Dagyum Ji was a senior NK News correspondent based in Seoul. She previously worked for Reuters TV.
Correction: a previous version of this article said this test was North Korea's eleventh so far this, when in fact it was North Korea's twelfth. It has been amended to reflect that fact.
Update at 1945 KST and 0845 EST: this article has been updated to include further details from the South Korean military. It was later updated to include a response from the U.S. government.
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