This Rocketman? 😯

I hope he took his warm socks.

Seems a bit excessive given wiki says apogee is normally around the 1,200 mile mark. I suppose it demonstrates that the missile is powerful enough to reach the correct apogee on a flatter trajectory ie a much bigger potential range rather than going straight up and ending up in the Sea of Japan. Don’t think the altitude has been confirmed publicly outside the NK propaganda.

Ah, BBC has graphage.