So how exactly does a "Nuclear-Propelled cruise missile" work? I would have assumed the weight of any nuclear reactor to make any such contraption impossible? Is this a conventional nuclear reactor producing electricity to run an electric motor, or is there some other scheme I haven't heard of?
So what's the motivation for those more advanced weapons? I thought we're already at MAD and the amount of current rockets would not be stopped by any existing system. (I.e. at least a small portion would get though) This would make developing anything more a waste of resources/time. Is that not correct anymore?