1. North Korea releases a propaganda video of a missile inspection featuring Kim Jong-un. The video gives a glimpse of the weapon’s engines.

2. Norbert Brügge maps the missile’s base to highlight the shapes and sizes of the main engine and its four steering engines.

3. The diagram is then used as an overlay atop the missile photo to determine main component sizes.

4. The inferred size of the main engine matches that of a Ukrainian rocket engine suspected of being sold illegally to North Korea.

Source: Norbert Brügge