North Korea's Oct. 12 launch follows Seoul's Oct. 8 disclosure of a glide-vehicle test by four days and its own claimed 1,000 km missile launch by nine

Counted from the dates, the cadence is five days and then four ^[10]. The North's Oct. 3 launch ^[6], South Korea's Oct. 8 disclosure ^[5] and the North's Oct. 12 launch ^[1] fall inside a nine-day span ^[9]. Two intervals do not make a trend, and a gap that shortens from five days to four cannot tell us whether the next is three days or fifteen.

Range is the figure that would move a risk premium, and the Oct. 3 record already has two versions of it. Seoul Economic Daily reported a flight of more than 700 kilometers ^[6], while North Korean state media claimed a range of 1,000 kilometers ^[7]. The difference is under 300 kilometers ^[11], though flight distance and range are different measures and neither source says Seoul disputes the claim. Kim Yo-jong, Kim Jong-un's sister, said at the time that the missile "is capable of changing its flight orbit at a low altitude and AI was introduced into it" ^[8], the South China Morning Post reported. The range claim and the AI claim are both Pyongyang's own.

We think a standing premium is premature on this evidence. The sources document frequency, and escalation would show up in range, which the Joint Chiefs said they were still analyzing ^[2]. The case could go three other ways. The analysis could show an ordinary short-range type, and Oct. 12 would then be small next to Oct. 3. It could show a longer reach than Oct. 3, in which case the risk is understated. Or the exchange could be tied to the DMZ land mine episode Seoul cited for its own test ^[5] and fade with it.

The reports include no market data, so the cost of these events in won or yen cannot be read from them. If the type proves ordinary and the next two weeks are quiet, nine days of activity was a small sample.