Okay. Show me one thing from any of those sources outside wiki.
ICBM aren’t returning from orbital velocity. They are on parabolic trajectories.
Yes critical mass is a thing check out demon core, critical mass is all that is needed. And it isn’t that much for plutonium only like 50kg.
I am actually staring at this comment sweating.
That is a very scary thought.
I hadn't considered that.