The following few examples demonstrate that the topics of ICBMs and space-related weapons can be well-received on this site:
- How to decide if the rocket most recently tested by North Korean is classified as long-range or medium-range launch?
- Do any current ICBM's have the delta-V to target the sun?
- What is the basis of the new Russian nuclear rocket propulsion?
- Is India having the military capability to "take out" a satellite in orbit still in question?
- Ballistic missile typical trajectory - along which path is it supposed to travel between Russia, China and US?
- Is it correct that it takes approx. 30 minutes for an ICBM to reach Russia?
- Nuclear Explosion in Space
- What are "Tundra missiles" and why are they so hard to detect?
- What are these things fired away from a ballistic missile at launch?
- Alternative tests for A-SAT missiles
- Why was the engine of the launch vehicle recently tested in Iran "not a very good missile engine"?
The question How Much Time Did We Have to "Duck and Cover" From an ICBM Launch Only 666 Miles Away? and while it contains specific information on a scenario I think the answers can draw from exactly the same knowledge base and math and physics that many other answers do here.
Not all of them, but many ICBM and space-related weapons questions have been on-topic, and this question seems to fall in well with the other the examples above. Why not leave it open? How is the site improved by closing it and preventing others from posting answers?