Your response to post 15 is some rambling about tobacco and Australia?
Wow.
I was stating a fact of research.
Civil defense of infrastructure is the only thing needed, but Australia by its shear vastness does not need it. All a farmer deed is a dust mask and a modicum of PPE, some potatium, calcium and a small hole in the ground for the fist hits.
The Russians have Yamamantu mountain whose underground is vaster than DC, and it is not the only cave complex, they have many more. They are ready to survive.
If a farming family can survive, so can an entire nation.
Nukes are only very limited artillery, there are only so many that can be thrown, after that it goes pretty much conventional.