Nah. Conventionally armed ballistic missiles or small strike aircraft aren't effective against deeply buried hardened bunkers, like Iranian or North Korean uran

Nah. Conventionally armed ballistic missiles or small strike aircraft aren't effective against deeply buried hardened bunkers, like Iranian or North Korean uranium refinement facilities. Only something like a B-2 carrying a GBU-57 will be effective for holding such targets at risk. This is considered a strategic imperative so cost is irrelevant.