North Korea Working on Carbon-Fibre ICBM for Multi-Warhead Delivery, Seoul Says

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.

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.

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.

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.

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

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.

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)

Copyright 2026 Thomson Reuters.

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