North Korea tests powerful missile engine. Will an ICBM launch follow?
Kim Jong-un oversaw a test producing 27% more thrust than last year's engine, signaling major strategic advancement.
North Korean leader Kim Jong-un personally oversaw a critical test of a new high-thrust solid-fuel engine designed for intercontinental ballistic missiles (ICBMs), state media reported. The engine, constructed from composite carbon fibre material, generated a maximum thrust of 2,500 kilonewtons (kN). This represents a substantial 27% power increase over the 1,971 kN engine tested just six months prior in September 2025. Kim declared the successful test elevates the country's "strategic military power to the highest level" and aligns with plans to modernize strategic forces with more effective components.
Analysts immediately linked the new engine to the Hwasong-20 ICBM, a system believed to be capable of striking targets worldwide. The engine's reported thrust is powerful enough to lift a 255-tonne object, suggesting it could carry a heavy payload, including multiple independently targetable re-entry vehicles (MIRVs). Hong Min, a senior research fellow at the Korea Institute for National Unification, noted that if confirmed, this engine would rank among the most powerful globally, drawing comparisons to the U.S. Peacekeeper missile system. The advancement to large, high-thrust solid-fuel engines is particularly concerning for international security, as solid-fuel missiles can be launched more quickly and with less preparation time than their liquid-fuel counterparts, reducing warning time for adversaries.
The test signifies a rapid acceleration in North Korea's ballistic missile technology, moving beyond demonstrating basic reach to refining the power, reliability, and responsiveness of its most threatening systems. Kim's direct involvement and his pledge to further accelerate defense capabilities underscore the program's top priority status. This technological leap complicates regional deterrence strategies and poses a direct challenge to non-proliferation efforts, as it brings Pyongyang closer to deploying a more survivable and potent nuclear deterrent force.
- Engine tested produces 2,500 kN of thrust, a 27% increase from the 1,971 kN engine tested in September 2025.
- The solid-fuel, carbon-fibre engine is likely for the Hwasong-20 ICBM, capable of global strikes with multiple warheads (MIRVs).
- Kim Jong-un declared the test elevates strategic military power "to the highest level," signaling accelerated modernization.
Why It Matters
This represents a major leap in North Korea's ability to quickly launch powerful, survivable nuclear missiles, fundamentally altering strategic calculations in Northeast Asia and globally.