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North Korea working on carbon-fibre ICBM for multi-warhead delivery, Seoul says

Published by Global Banking & Finance Review

Posted on April 6, 2026

2 min read

· Last updated: April 6, 2026

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North Korea working on carbon-fibre ICBM for multi-warhead delivery, Seoul says
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SEOUL, April 6 (Reuters) - North Korea's test of a solid-fuel rocket engine is intended for intercontinental ballistic missiles (ICBM) built with carbon fibre to extend range and allow for delivery of

North Korea Developing Advanced Carbon-Fibre ICBM to Deliver Multiple Warheads

North Korea's Recent Missile Developments and Strategic Implications

Solid-Fuel Rocket Engine Test and Its Purpose

SEOUL, April 6 (Reuters) - North Korea's test of a solid-fuel rocket engine is intended for intercontinental ballistic missiles (ICBM) built with carbon fibre to extend range and allow for delivery of heavier and possibly multiple warheads, South Korean lawmakers said on Monday.

In March, North Korea conducted a ground test of a solid-fuel rocket engine that analysts believe is being developed for its latest ICBM.

Enhanced Thrust and Range Capabilities

The new engine likely has greater thrust than the previous model it tested in 2024, which was already assessed as capable of striking anywhere in the mainland United States, they said.

Testing Trajectories and International Concerns

North Korea has conducted all its longer-range missile launches at a lofted trajectory to splash down the projectiles in the ocean off its east coast or to the east of Japan to test them without flying them for a distance they are designed for.

Technical Advancements: Carbon Fibre Airframe

North Korean media showed the airframe of the missile at the new engine test that was built with carbon fibre, which is lightweight while strong, allowing the projectile to carry multiple warheads, member of parliament Park Sun-won said.

Insights from South Korean Intelligence

Park was speaking to reporters following a closed-door briefing by the National Intelligence Service (NIS), South Korea's main spy agency.

Leadership and Strategic Messaging

North Korean leader Kim Jong Un was on hand for the March 28 test and said it was a significant upgrade to the country's strategic forces.

Defiance of International Sanctions

North Korea has defied a U.N. Security Council ban on missile and nuclear tests, steadily progressing in the development of more powerful and technically superior missiles.

(Reporting by Jack KimEditing by Ed Davies)

Key Takeaways

  • The March 28 engine test, overseen by Kim Jong Un, produced about 2,500 kN thrust—~26% more than a similar 2024 test (apnews.com).
  • Use of carbon‑fibre composites makes missiles lighter and stronger, enabling higher payload capacity—including potential MIRV (multiple warheads)—rather than just range extension (koreajoongangdaily.joins.com).
  • Analysts link the engine to the emerging Hwasong‑20 solid‑fuel ICBM under development, increasing concerns about North Korea’s ability to threaten the U.S. mainland and complicate missile‑defence systems (en.wikipedia.org)

References

Frequently Asked Questions

What new technology is North Korea using in its ICBM development?
North Korea is developing ICBMs with carbon fibre construction and solid-fuel rocket engines for greater range and payload capabilities.
Why is carbon fibre important in missile construction?
Carbon fibre is lightweight yet strong, allowing missiles to carry heavier or multiple warheads over longer distances.
What recent missile test did North Korea conduct?
North Korea conducted a ground test of a solid-fuel rocket engine believed to be for its newest ICBM in March 2024.
What did South Korean lawmakers report about North Korea's missile program?
They reported that North Korea's new ICBM tech is intended for extended range and multi-warhead delivery.
Has North Korea violated any international agreements with these missile tests?
Yes, North Korea's missile and nuclear tests defy U.N. Security Council bans.

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