It's not about weapon. It's about the damage dealt. If you trespass on my property, I can't kill you just for that. If you pick my pocket, I can't kill you just for that. If you don't understand libertarian views then how can you be so opposed to them?
No. Self-defense is defense from an immediate threat of physical violence in proportion to the threat and directly targeted at the person or persons making the threat. The particular people they abducted, tortured and killed were not threatening them with physical violence. Therefore, it wasn't self-defense.
So you don't agree they are entitled to nukes.
Phew!
Now tell us who you will put in charge of deciding who is fit to have nukes as they only want to defend themselves and who is not?
Still waiting for my answer
Who is in charge of deciding if a mugger is using his knife to rob your or is using it to whittle a piece of wood?
Witnesses and the person being mugged. And the mugger, if he confesses. That's all very interesting.