Pyongyang says the Wonsan missile can change path at low altitude

North Korea said on Saturday that the ballistic missile it fired from the Wonsan area that morning was an intermediate-range strategic missile, and that artificial intelligence had been introduced into a weapon able to change its flight path at low altitude.

Seoul's Joint Chiefs of Staff detected the launch early on Saturday, 3 October, from the east-coast city of Wonsan toward the East Sea, the body of water Japan calls the Sea of Japan. The missile flew more than 700 kilometres, the Joint Chiefs said. Japan's Defense Ministry put the distance at about 680 kilometres and said the missile came down outside Japan's exclusive economic zone. The two figures are not a contradiction so much as two radars measuring a weapon that Pyongyang says does not fly a clean arc.

Kim Yo Jong, sister of Kim Jong Un and a senior party official, gave the political description hours after the detection. She called the projectile an intermediate-range strategic missile, said it could change its flight orbit at low altitude, and said AI had been introduced into it. She did not say what the software does, what sensor it reads, or whether a person remains in the decision. She said the result was that there was no way to avoid the attack, and she attributed to her brother the view that no other country would have access to such technology for at least several years.

What state media added on Sunday

The Korean Central News Agency reported on Sunday that Kim Jong Un had overseen the launch, with his daughter Ju Ae and his wife Ri Sol Ju beside him in photographs released with the dispatch. Ju Ae, first shown to the public in 2022, has been placed by South Korea's intelligence service as the most likely successor, on the basis of her growing role at military events. Her presence at a launch is a succession signal as well as a family photograph. It does not prove anything about the guidance software.

KCNA said the drill was meant to train soldiers operating a hypersonic strategic weapon system. Kim was quoted saying the missile soldiers had shown their professional qualifications and a counterattack posture. A further account, carried by defense reporters citing North Korean statements, said the Missile Administration told Kim the weapon could use at least four flight-path modes, including what Pyongyang called a wave-like trajectory, chosen according to mission and target. Kim Yo Jong claimed that South Korean and Japanese tracking lost the missile once it began those manoeuvres. Seoul and Tokyo have not confirmed a loss of track. They have confirmed a launch, a direction, and a splashdown at sea.

The claim, and the limit of the claim

An AI guidance claim is easy to make and hard to check from outside. A missile that jinks at low altitude can do that with a pre-programmed path, with a radar altimeter and a set of rules, or with a model that updates in flight. Any of those can be described as intelligence in a political statement. The observable facts are the ones two foreign militaries measured: a launch from Wonsan, a flight of roughly 700 kilometres, and an impact outside Japan's economic zone. The unobservable fact is the one Pyongyang wants believed, that the path was chosen in flight by software other states do not have.

The launch also sits next to a separate grievance. Days earlier, Seoul's military demanded an apology for a blast in the Demilitarized Zone that wounded three South Korean soldiers, which it blamed on the North. The missile test did not answer that demand. It changed the subject to a weapon Pyongyang says cannot be intercepted.

What Seoul and Tokyo can actually do with this

South Korea, the United States and Japan said they were sharing tracking data and keeping what the Joint Chiefs called a strong defence posture. That sentence is standard after a North Korean launch. The new element is the low-altitude path claim. Interceptors built for a high arc have less time, and a worse angle, against a weapon that stays low and turns. If the four-mode claim is real, a single battery cannot assume the next launch will look like this one.

None of that is settled by a KCNA dispatch. It is the reason the dispatch was written. The next measurement that would move the claim from announcement to evidence is a second test in which foreign radars record the turn, the altitude, and the time between them. Until then, the record is a Saturday morning launch from Wonsan, a flight of about 700 kilometres, a leader and his daughter on the viewing stand, and a guidance claim that Pyongyang has not documented.