IMO the world is heading towards a hot war where each side is confident in their ballistic defence capabilities against nuclear attack. We have to hope it isn't overconfidence.
no one is remotely confident in their BMD, where do you get that idea?
Increasing capacity in the next 20-30 years. I didn't mean right now.
It will never happen. To have any hope of reliably intercepting right now, you need multiple interceptors that are nearly as complex as the missiles they are intercepting. That math just doesn't work out. It's extremely cost effective to just out-build your oponent's defensive capacity.