North Korea says it tested cruise missiles to be launched from sub

North Korea said it test-fired cruise missiles designed to be launched from submarines. It described the exercise as a test of underwater combat readiness and a way to strengthen its Navy. State media called the weapons strategic, suggesting they may be intended to carry nuclear warheads.

The reported launch area was in waters off the east coast of the Korean Peninsula. However, North Korea did not say whether the missiles came from an operational submarine or an underwater test platform. That missing detail limits what can be concluded about the system’s maturity.

The test fits Pyongyang’s wider effort to develop missile submarines and both ballistic and cruise missiles. North Korea has conducted several weapons tests in recent weeks. It says these activities support military deterrence against the United States and South Korea, while outside assessments do not yet believe a modern missile submarine is fully operational.

A submarine-launched cruise missile is a powered, guided missile released by a submarine or underwater launch system. It is built to travel through the atmosphere toward a selected target. Its guidance system can use onboard navigation and other sensors to adjust its route during flight.

The key mechanism is sustained powered flight. After launch, the missile generally flies horizontally rather than following a high, arching ballistic path. It can approach from the sea and follow a route close to the surface, which may make detection more difficult. The article does not establish whether North Korea used an actual submarine.

Such a weapon gives a navy another way to threaten targets from offshore. For North Korea, the reported test is linked to underwater combat readiness and naval capability. Its importance depends on whether the country can launch, guide, and support these missiles reliably from operational submarines.

Cruise missiles and ballistic missiles use different flight paths. A cruise missile normally remains within the atmosphere and uses engines and guidance systems throughout most of its journey. It can alter course and fly toward a target along a more direct route.

A ballistic missile, including an intercontinental ballistic missile, receives a powerful boost and then follows a largely arcing path through the upper atmosphere and beyond before descending. An ICBM is defined by its very long range. The article mentions an ICBM displayed at a North Korean military museum and reports that it was capable of reaching the United States.

These differences affect detection, defense, and military roles. Cruise missiles may approach from unexpected directions and remain near the surface. Ballistic missiles travel much faster over long distances and can cover intercontinental ranges. North Korea is developing both types, alongside efforts to improve its underwater systems.

Modern cruise-missile range varies widely by model, payload, fuel capacity, and mission. Many land-attack and anti-ship systems travel several hundred kilometers. Some advanced versions exceed 1,000 kilometers, and a smaller number are designed for still longer distances. These are broad international ranges, not figures given for North Korea’s tested missile.

During much of flight, cruise missiles can stay close to the surface. Sea-skimming weapons may fly only a few meters above the water, while land-attack missiles often use terrain-following flight at low altitude. This works through onboard navigation, radar or other sensors, and flight-control systems that adjust the route.

Low flight can reduce warning time and complicate radar detection, especially near uneven terrain or a curved sea horizon. The exact range and altitude of North Korea’s weapon remain unknown. The article gives no technical specifications, so its test cannot establish how far or how low the missile can fly.

The distinction matters because an operational submarine adds mobility, concealment, and the ability to launch from changing positions. A successful launch from such a vessel would demonstrate more than missile engineering. It would also indicate progress in submarine construction, crew operations, communications, deployment, and command systems.

An underwater test platform can imitate the launch environment and help engineers check whether a missile leaves its tube safely. But it does not prove that a submarine can patrol, evade detection, receive orders, or conduct repeated launches. The article specifically says North Korea did not identify the platform used.

That uncertainty makes the test harder to assess. The article reports that North Korea has pushed ahead with modern missile submarines, but it is not yet believed to have launched one in full operation. A confirmed submarine launch would therefore mark a more significant step toward a usable underwater missile force.

A dependable submarine-based missile capability would add a mobile launch option to North Korea’s military forces. Submarines can operate away from fixed land sites, so opponents would face greater uncertainty about where a missile might be launched. That uncertainty could complicate surveillance, missile defense, and crisis decision-making.

The concern would be greater if the missiles are genuinely strategic, as North Korean state media described them. Strategic wording implies a possible nuclear role, although the article does not confirm that these specific missiles carry nuclear warheads. A submarine could potentially threaten targets from offshore and create another part of North Korea’s deterrent.

Regional security could become more tense. South Korea and the United States might strengthen underwater tracking, coastal defenses, and military coordination. North Korea could continue testing to improve reliability. Still, the article says the country is not yet believed to have a modern missile submarine in full operation, so the capability remains incomplete.

Nuclear deterrence is the strategy of preventing an attack by convincing an adversary that retaliation would be devastating. It depends on having weapons, delivery systems, and enough confidence that the threat would be credible. The goal is not necessarily to use nuclear weapons, but to make opponents hesitate.

North Korea’s recent activity reflects this approach. State media described the tested cruise missiles as strategic, implying a possible nuclear role. The country has also developed ballistic missiles, including an intercontinental ballistic missile reportedly capable of reaching the United States. Together, these systems could support a broader deterrent strategy.

The article says Kim Jong Un has made expanding North Korea’s nuclear arsenal his key priority. It also says denuclearization, sought by the United States, is off the table. North Korea has halted coordination with South Korea and removed reunification references from its constitution, keeping regional tensions high while its weapons programs continue.