Pyongyang rejects Seoul's hypersonic test claims, justifies own arms buildup

What happened: North Korea rejected South Korea's explanation for its Oct. 8 hypersonic glide vehicle test, calling Seoul's account of heat-resistant materials "far-fetched" and citing South Korean weapons development to justify its own arms buildup. Key numbers: South Korea's first HGV test launch took place Oct. 8. Why it matters: The dispute reflects conflicting North and South Korean assessments of the technology demonstrated in the test, and Pyongyang used Seoul's hypersonic plans to justify strengthening its own defense capabilities.

North Korea rejected South Korea's explanation for its Oct. 8 hypersonic glide vehicle test, calling Seoul's account of heat-resistant materials "far-fetched" and citing South Korean weapons development to justify its own arms buildup.

The dispute reflects conflicting North and South Korean assessments of the technology demonstrated in the test, and Pyongyang used Seoul's hypersonic plans to justify strengthening its own defense capabilities.